How to find short circuit component without spending $6k on FLIR cam.

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7 апр 2015

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Комментарии : 977

@rossmanngroup 6 лет назад

Thank you to everyone who made a purchase on eBay via our affiliate link at rossmanngroup.com/ebay for helping support this type of content. Your viewership is appreciated and as always, I hope you learned something!

@BillAnt 6 лет назад

Those in "the know" know that there's ALWAYS some other issues on boards besides the issue it was sent in for... yes mark my words on that.

@adhikarideep 4 года назад

Really loved the tossing up part to ta back of the bin... Great lesson there..

@allaraaver8432 4 года назад

Hi... You probably won't even see this but since im already here im going to ask anyway. I have a laptop (not a mac) and i have this problem where the power wires that run inside the laptop to the motherboard socket (best way i can describe it since i dont know what that particular piece is called) and the socket head keeps burning up, this is the second one i have already and its completely burnt the wire again. My laptop works fine though. There is literally nothing else that seems to be wrong with the laptop other than that power socket that connects to the motherboard keeps burning my wires... Is it because of a short somewhere or do you have any suggestions maybe what it could be?

@deankay4434 3 года назад

A digital multi meter called a DMM has amp high and low. My Fluke 87 V will take 15 amps but most are 10 amps. This is a lot of amps or current for any laptop circuit. From the power plug, if you have actual wires (Let’s say 3) and #2 burns, discolors or melts, that one circuit is pulling too many amps. The plastic is the connector and the metal part (Male & Female) are terminals. Both side should be replaced at the same time. The female side touches the male terminal to allow circuit voltage and amps/current to pass. Heat damages the female side spreads, loosing connections. The damage is done but reduces amps due to higher resistance. If there is nothing between the power connector and the connector, there is a problem “After” the connector. Most have a pair of switches or Mosfets, that let amps and volt thru, but if high voltage, reverse polarity or high current in certain designs, the second MOSFET opens to protect the circuit. To test an unknown amperage, you have to open the circuit/wire to make the current pass thru the meter. Start on the high setting and if less than the low DMM setting, move the RED meter led and write down that reading while on and working. Get inventive, take photos but make sure everything is hooked up, then turn on. Mosfets fail, so do caps or capacitors. Follow the copper traces (Under the Blue or Green Lacquer coating) Screw holds are ground so if on, connect the BLK led to one and test for voltage at other components at the soldiered leg and write it down. If you watched Louis video, he gives you the name of a website to download by make/model and work from there. If it’s older, the battery can be an issue as they are on this supply side. They can pull enough amps to get warm/hot/fire...Fire Bad! Hope this help. Louis is clear to hear, a little funny, but calls balls & strikes. I have a dead short in a 3 year old Dell that I will be working on. He is going into my saved file. Hope this helps. Automotive ASE Master Tech since 1978-Retired.

@elmariachi5133 2 года назад

How does this customizer manage to guarantee to always have at least two errors on one board?

@GrantsPassTVRepair 9 лет назад

I used a similar technique with freeze spray which turned the board frosty white, and after applying a littler current to the shorted circuit I observed which component defrosted first. Considering alcohol cost far less than freeze spray I really appreciate your tip. Thanks!

@rossmanngroup 9 лет назад

Grants Pass TV Repair It follows the rule of what is in front of me. Freeze spray is something I must order. Alcohol is something I can buy when I walk fifteen steps out of my store. Impatient yuppy will only pay if it works NOOOOOOOW, so I pour a bottle of alcohol on it.

@GrantsPassTVRepair 8 лет назад

I've heard this about compressed air. Considering the cost of freeze spray It would be nice to figure out how to make it my self.

@TTRVision 6 лет назад

instant freeze of the board will not damage the components due to sudden contraction?

@FlourescentPotato 4 года назад

@@TTRVision no

@jessihawkins9116 10 месяцев назад

@@FlourescentPotatoare you sure?🤔

@peterduxbury927 5 лет назад

Fault-finding in electronics is only for people who are passionate to learn those special skills, and it can be a real challenge at times! To find short-circuits on any PCB, I try to isolate specific areas, just like you, and then power-up the Board with correct voltage - from an independent supply. You favor the use of alcohol to search for a rise in temperature of the shorted-down component. I do this differently. These days, a cheap Hand Held Laser Pyrometer will find (with the Laser point) the hottest component on the Board. This method really works a treat, and no liquids or other contaminants are used to wet the Board. The repairs of almost anything electrical has been a lifetime's hobby for me, since I was 14. I am seventy now, enjoying my retirement to spend more time fixing electronic consumer items. I agree that there are many "tough dog" problems, which eat away at your time, and your reward would be almost nothing! Finally, I want to say that I really enjoyed this tutorial, and also your personal views on life. Best wishes from Australia.

@LeeValentine001 4 года назад

Peter you are my spirit animal

@tanner1985 4 года назад

Always good to hear passionate people, you are the Masters! Greetings from Italy

@jw228w 4 года назад

mr Peters am interested in a basic pyrometer to find shorts on pcb.can you suggest a couple of models? thanks john

@adrianalexandrov7730 4 года назад

When pyrometers costed a fortune we used receipts for overheat detection. The thermoprint paper they're made on starts to darken at about 50-70 celsius so we've used to put them on top of transistors to monitor if part of scheme is heating. Not the best way but an affordable option

@user-kr6qt9ju7p 4 года назад

Glad to know about your passion. I (aged 62 years) find somewhat in a similar situation. Nothing can give me so much satisfaction as I get when I am able to bring the stuff to normal life. I can willingly work on a gadget repair mission for even hours together without caring for hunger and quality of ambiance. The only irritating factor being that after isolating rogue component, I am unable to find the replacement component, be it new or old one, particularly of very old model such as iMac of 2010 or 2011, though many of its assorted modules as a whole are available online at the killing price! Notwithstanding such occasional setbacks, I never find short of enthusiasm for the next round of challenge of repair !!

@JimWilson619 7 лет назад

THE most informative video on this subject I have found. I learned more watching this 46 minute video than dozens of others. Nice pace, straighjt to the point, not repetitive, and very detailed, thanks for making these videos Louis!

@JimWilson619 7 лет назад

P.S. The only suggestion I would have is maybe use a Large Inverted color scheme for the cursor, it's hard to follow the mouse when your pointing to things on the schematic.

@user-fl2ug7sr3t Год назад

@@JimWilson619 Hi, I was wondering if you know where I can get schematics from? Specifically graphics card schematics.

@Lickemstick 8 лет назад

Thank you for taking the time to make this and all of your videos good sir. If you weren't a good teacher then why would you have almost 200,000 people signed up for class?

@Ritttzz 7 лет назад

I totally agree with your view on balance of self and sanity against work for a better life. I took electronics in 1992 but didn't graduate and watching you attack an issue even as rough shod as it may be is mesmerizing to me. I could grab a bag of popcorn and watch you troubleshoot as if I'm watching a blockbuster movie at the theatre. Thanks for sharing your daily grind with all of us out here on the internet.Christopher

@jessihawkins9116 10 месяцев назад

why didn’t you graduate?

@nathantaylor9144 8 лет назад

For all of you new to Louis's channel, he's the real deal.

@rossmanngroup 8 лет назад

+Nathan Taylor Thank you!

@oldestgamer 8 лет назад

+Nathan Taylor it didn't take long for me to see that! subscribed!

@rossmanngroup 8 лет назад

oldestgamer Thank you!

@ronniebrown8775 8 лет назад

I like your mind set young man! on whats inportant in life. thank you for one of the best RU-vid experienes I've ever had

@CHIBA280CRV 8 лет назад

This is the first video I have seen of yours , and it is an excellent tutorial ..I have subscribed and look forward to seeing the rest and future videos. Thank you for sharing your knowledge with us.

@rossmanngroup 8 лет назад

+JOGO Thank you!

@randydavis9306 8 лет назад

+Louis Rossmann I HAVE SOME CIRCUIT BOARDS THAT DONT WORK FOR AN LED SIGN COULD YOU CHECK THEM OUT FOR ME MY SIGN IS USLESS WITHOUT THEM MY EMAIL IS DAVISCUSTOMCYCLE@GMAIL.COM THANKS RANDY

@Ozziepeck11 8 лет назад

+RANDY DAVIS I think he only does apple related stuff, contact the manufacturer of the boards.

@housemana 7 лет назад

TURN OFF YOUR FUCKING CAPS LOCK WHAT ARE YOU - OLD?

@urgencepc4563 6 лет назад

You're a brilliant teacher. I literally spend all my free time between you and Eli. And building a forest gym. No comments. Very grateful. There's free beer for you here (if you come fix my pc :P).

@ja1957 7 лет назад

Worked in electronics maintenance most of my life. Little experience with surface mount stuff. I appreciate your demonstration of using the smoke tests to find problem shorts as well as the demo of unsoldering and resoldering using hot air. Thanks a lot your a pro.

@davemagnani5166 7 лет назад

The method I have been using for 30 years to locate an overheating component is to spray the board with just enough freeze spray to cover it with a light coat of frost, and then watch which component melts the frost immediately. For larger boards, just spray one section at a time. I really enjoy your videos. Since I haven't had much need to deal with BGA's until recently, your instruction has gotten me proficient very quickly. Thanks.

@VictorSilva-rq4kz 8 лет назад

Louis, I totally agree with the comments you made at the end of the video. Thanks for the Vid.

@williamburdon6993 7 лет назад

Even an old man can learn from you! thanks and don't stop helping others, that's what life is about.

@rossmanngroup 7 лет назад

I'm glad to hear it, thank you!

@Blackmage50 5 лет назад

I'm an automotive Diagnostic guy and I just had a 75 Jeep with a snow plow that was inoperable. Figured this will go quickly, tracked it down to the remote and figured why not open this up and take a look see... Can't be that special right? It runs 3 1 wire solenoids ground through the body and 1 big 200 amp solenoid. When i cracked it open I found an atmeag 8515. For some stupid reason I was expecting a few mosfets and some buttons. Lol I really like your movies and appreciate the time you spend with us on these repairs. 👍I love my hakko iron!

@IanGrodyRules 8 лет назад

Knowing when to quit was the most ingenious part of this video. You have a far steadier hand than me too. The missus didnt understand why i keep old boards and components laying around and after her, surprisingly, watching now sees why. Thanks for a great video, hope to see more.

@zoommair 7 лет назад

I love how you bring some real world philosophy into your videos. Can I fix it? Sure. Is it worth my time? Hell no! lol

@Shawn1174q 7 лет назад

It's about time we have someone who speaks the truth and doesn't just say what people want to hear!

@brianb5779 7 лет назад

Just came across your videos, awsome. Cant wait to look up others you have.

@alansnider4191 7 лет назад

That was entertaining as hell. I got out of component repairs years ago and now I know why! Thanks for the video.

@ugurmustafadere4608 4 года назад

Learnt a lot from not only by this video but also others. As soon as the video finished I have checked for the title (hoped PART1) :) Thanks to you enthusiasm does not die. You got the a huge fans all around the world.

@maxtrac1 7 лет назад

I agree,I used to repair boards at chrysler.And i felt the same way,If the board started to look beyond repair after about 2 or 3 hours it would go to my salvage pile.

@krisztianszirtes5414 7 лет назад

[touches it] "Ow." [touches it longer] "Oooow" "So we have the are we are looking for..." Truth is, this is still the best method. :D

@stanleydsouza6723 7 лет назад

really seems sincere in your work and approach, so keep going, we love the way you treat us, thanks buddy

@whoisme678 7 лет назад

There are those people who talk AT people and there are those people who talk TO people...YOU fortunately are one of those who would make a good teacher....you talk TO people so I have to say would do an excellent job of educating others who want to learn from you.

@Vo0d0o2009 8 лет назад

subscribed ! best resolution Tools and setup ever seen , Gratz !

@tiberio135 7 лет назад

You have not seen much.....have you.

@Vo0d0o2009 7 лет назад

tiberio135 no , im in eye resolution and im on point to buy a setup like this one , and you did you have a setup that kill this one to sold at me ? im not sure how i need to catch your comment , maybe you can explain it .

@tiberio135 7 лет назад

jeff pepin ????

@Vo0d0o2009 7 лет назад

tiberio135 what you said ???????

@itllgetyadrunk 7 лет назад

+tiberio135 This is an intelligent channel, we have no need for rudeness. Great video and Louis and his setup are awesome!

@TampaTec 7 лет назад

He's a true New Yorker, He has a New York State of mind (not a bad thing) i know this i'm from NYC too it's cold weather and even colder people, a city of about 10 million people but you'll never feel so alone, you'll know what i mean if you ever rode the NYC subway train. just try to say hi to a true new yorker (born and raised) they most likely would look at you like i don't you a-hole. I heard northern Cali is the opposite but i never been.

@lxOFWGKTAxl 5 лет назад

1st time viewer. Awesome techniques, whatever it takes to spend the less money, maximize profit, and get the job done!

@mike-yp1uk 7 лет назад

wow i dont know much about electronics but for some reason i like watching the repairs and you make it look easy i like the magnifier scope, the schematics and all the other great equipment your using. you make great videos. your dry humor is great, its so true and funny. thanks for sharing your techniques.

@biasaigondo 8 лет назад

I also am a macbook repair the circuit board, I was in Vietnam and I'm happy if exchange and learn from you

@caloc8593 8 лет назад

cau truc cau sai roi anh oi, ho ko hieu dau

@frankpitochelli6786 7 лет назад

Also......agree with EVERYTHING you said at the end of your video.....I wish I would've walked away many times as well. ....instead, I would sit for too many hours batting my brains out and getting aggrevated and end up throwing in the towel after losing money and time , just to keep my reputation in tact.......Inn the end, no one cared and all I did was end up hating a business that I loved for many years and became disgruntled with the industry. ........ I now drive a limo and don't like that bizz very much, but, I guess we have to pick our battles........ It all comes down to the $$..... As it always does....!!!! Good lesson learned, I learned it after many years of frustration in the electronics service industry. !!!!!!

@joeleonard6007 7 лет назад

Frankie same here i went to work for Greyhound driving a bus paid more and less aggravation but i did manage to get retirement from Motorola before i left now have Greyhound retirement also finally in retirement i am getting paid for all those years of aggravation.

@JoepSwagemakers 8 лет назад

Really nice video's you have on your channel! As a kid was always soldering and taking things appart but basic electronics never was my thing. With your video it's way easier to start and I think this is going to be my new hobby! I just repaired a few macbooks where the keyboard was broken due to coffee spil and a macbook that needed a reflow and it's really fun to do! Thanks for making video's like this!

@arDevNullar 9 лет назад

Man, I stumbled across your videos, have to say you are a genius. Thanks a lot for these contributions.

@BenHutchinson321 8 лет назад

You don't need to spend $6k on a thermal camera to find a bad component. The $250 FLIR One thermal imager attachment for smart-hones is good enough for that simple task.

@Shawn1174q 7 лет назад

Respect to this guy... "I'm going to live my life"

@PrasadKulkarni-pi7ec 2 года назад

Your videos are like virtual hands-on training. Thanks for demostrating it. And last part message really worthy enough to be remember.

@ptrooms 7 лет назад

Great and a very good practical approach with lots of non-tehcnical wisedom. Keep on doing what you like in the way you like to do. In relation to the board, i guess this a one of those 21 failure cascading boards.

@PerrynBecky 7 лет назад

I used to run into cars from certain customers we used to call "charity cases" where the customer had 50 things wrong with the car and only wanted to pay you to fix one of them, but the other 49 were interconnected. That car would go in the back corner until I was able to get the paying jobs out and actually make enough money for supper that night after paying the bills, and then I would come back to that "problem child" the next day. Sometimes, that customer would be as big of a headache as their car was where they would call every hour on the hour wanting to know if the vehicle was done yet. I learned late in life after becoming disabled that there is things I wanted to do with my life other than "solving that next challenge", that I almost didn't get the opportunity to do. It's good to see that you know when to call it for the night, go to the gym, take care of yourself as well and let the charity work wait for later. There's a reason that customer is bringing those "basket cases" to you, they probably got ran out from every other tech's shop before. I like your priorities.

@TechGorilla1987 8 лет назад

So, your old Hakko is like my ex wife? Takes over 3 minutes to warm up, isn't as hot as it used to be and doesn't blow like it used to? Yep, that's Kristen.

@cjhardknocks7040 7 лет назад

Damn thats funny, LOL mainly because I found out I wasnt the only one with that problem!

@raymondj8768 7 лет назад

lmfaorotf

@Subject__ 7 лет назад

Lord, plz dont let Kristen find this comment. may this man take it to his grave, if not, i fear the grave will find him

@joeya5438 5 лет назад

just stop dude

@acebrownful 4 года назад

Lol,

@advancednutritioninc908 7 лет назад

Great Info!! Thanks for the heat tracing tips! I usually use my finger and freeze spray - but the alcohol is so much cheaper and a smarter move! Excellent - Be True to Yourself!! Subscribed!

@AmyAndrewAdventures 7 лет назад

Oh man am I glad I found your channel! I can't wait to learn/watch the rest of your videos!

@Agent24Electronics 9 лет назад

Nice video. I like the idea of using alcohol to show up the bad part! Here's my (hopefully constructive) critique and thoughts: I would watch it with the external power supply. 10A current limit is overkill IMO, start at 0.5A or 1A or so and work up if you have to. The shorted IC here only took ~400mA and heated up well enough to be found easily, but you can't always count on a bad component limiting the current itself. 10A is enough to make things go up in flames, especially if it's a ceramic\tantalum capacitor, and burning a hole in the boad is going to ruin the board and your day. Also, I find the back of the hand\fingers are more sensitive so they work better for finding a hot component at lower power levels. For those who don't worry about ESD, I still think it's a vaild concern, even when you use troubleshooting methods like this. With a suitable current limit you are not going to blow anything, but ESD can still cause problems, and the effects aren't visible, or even always consistent. ESD damage is great for causing intermittent problems, problems that make no sense, or boards that die 2 weeks after you fix them and then you're just wasting more of your time and money. Anyone interested in ESD prevention should check out Dave Jones on the EEVBlog, he's got good videos on setting up an ESD safe work area. Proper ESD precautions help rule out one more thing that can go wrong, and in troubleshooting electronics, the less unknowns, the better.

@rossmanngroup 9 лет назад

Agent24 Good point. On 5v or 12v rails I usually start at 0.2v, 10 amps and take it up slowly. It's best to start with unlimited amperage and ultra low voltage first. Here I cavalier'd it to 3.4v instantly because I knew this board would be shit regardless. :( And sadly I was right. :( Cool things about the real knobs on it is you can turn things up and down pretty quickly!

@marcchavez6658 7 лет назад

Just to confirm: What kind of alcohol is he using? A long time ago when I used to be assigned have to go around our large office cleaning Xerox machines in internal areas such as the pressure roller, printer drum, scraper bar, etc. that had toner and paper dust accumulation, I was given a can of special cleaning fluid that according to the content label was just 100% Isopropyl alcohol and told never never ever use the stuff from the pharmacy for fear shorting something as well contaminating other things inside these pre- Laserjet era printers. That may sound like over kill, but since my office was the national advertising agency for Xerox and used those copiers heavily, we just did what was recommended without question. I can only assume their reasoning was the stuff from the pharmacy was a mix of water and alcohol which could cause a short of the electronics as well as contaminate things non-electric. I knew that the CVS/Walgreens stuff labelled as Isopropyl is just as deadly to consume in a cocktail as the stuff Xerox says was required. But the rubbing alcohol never made my fingers turn ash white and give a dishpan hands look instantly due to absorbing the oils and water from my skin. Apparently besides not mixing martini's with it one was not supposed to use 100% Isopropyl on expose skin either.

@mikepereira883 6 лет назад

Marc Chavez in another video he said 99% alcohol

@bonbonpony 5 лет назад

I think it's Jägermeister ;)

@adrianalexandrov7730 4 года назад

I know it's 4 years old but I've just found out about Louis and 'very been watching eevblog occasionally since the middle of 2010s and writing this just to share that they kinda made cross-over: Louis is actually featured in eevblog #1222 Apple's MacBook Design Fail

@rolfinator1 8 лет назад

we need guys like you after skynet

@czdaniel1 8 лет назад

+Ron Paul -- Skynets, they need to relaunch the terminator franchise to include multiple Skynets to account for those people/country/corporations cought up in the Googlesphere, Applesphere, or Microsoftshpere skynets....The big reveal at the end can all hinge on what side Amazon allies with in the war to destroy Mankind (and the competing skynets)

@FantaBH 7 лет назад

+Ron Paul - LoL

@warwickbaines-bennett7721 7 лет назад

I find myself watching your videos for jobs I'm not even doing. Congrats on having possibly the first good educational AND entertainment channel. Good stuff, thanks for the info.

@ericbraman 7 лет назад

people who complain shouldn't waste bandwidth on comments. make a video and show us. I appreciate the effort you put into helping people like me. I'm a beginner, and a few of your techniques have helped me get past some brick walls. thx for taking the time to share knowledge.

@petti78 8 лет назад

Static can put kilovolts through your components, a different matter from 3 volts and some amperage.. so disagree there. And also I've found that the best way to learn something is to teach it, you thought you knew something, after trying to teach others you notice all the things you did not know and get better :) Highly recommended.

@ssl3546 8 лет назад

no kidding - as talented as this guy is I would not send my electronics to anyone who doesn't take ESD seriously.

@Tony-Tequalla 8 лет назад

+ss l Me neither. Also, setting his PSU to supply 10Amps and waiting to see what got hot. Not wearing safety glasses.

@rossmanngroup 8 лет назад

high amperage low voltage makes more sense than limiting amperage as the circuit itself will have resistance. if you want to limit amperage, then just set the power supply to 0.5v, no amp limiting, and slowly go up.

@seveno1 8 лет назад

maybe spray some freezer over the components till they go white.... then see the one that thaws out fast

@simasrazi 8 лет назад

conductivity

@randomtech1nfo 4 года назад

Thanks for making these videos great info. I'm going to try that alcohol technique at work tomorrow on a board with a short to ground +12v rail.

@Magicman8508 8 лет назад

This is the first video and i really like how you do the troubleshoot with alcohol. This is a create trick. And thanks for your comments about health. You're absolutly right, its important to be healthy to achieve good results.

@robthesamplist 9 лет назад

i like how your down to earth and give away all your little tips.

@DanielWilsontech 7 лет назад

The advertisement on this video was for FLIR cameras hahahaha

@MrTarmonbarry 4 года назад

Hi , when you were talking about having the knowledge in your head but having problems with putting it into words i totally understood your problem . I have a friend in Ukraine nd we message a lot . She is trying to improve her English and every so often she will ask me something about a word or sentence formation , i have it in my head but have the same problem as you . Trying to put it into words just will not happen . Surprising how much stuff we have rattling around in our heads that we know but can not put into words . Everyone who watches your videos appreciates what you do even if they do not understand the technical stuff , Worth watching just for your life lessons

@Suspect42 7 лет назад

Hey man you are a true professional. I really respect your skill and you spending the time and effort to explain everything so well.

@aNewJesus 4 года назад

2:20 if only he had paul daniels multimeter software lol /s

@bladecppro26 9 лет назад

love the mental health comment,and thank you for shearing great skills and knowledge.

@vivvpprof 9 лет назад

John Pannell +10!

@mooseinbeesocks2700 4 года назад

I listen to these at work, Its inspiring to hear how hard you work, Luis

@wernerboden239 7 лет назад

The comment in the last part might just be the most valuable info: Make the choice to stop and smell the roses at some point in time. I find it to be a hard choice, when I have to - not finish what I started, because it feels like a disappointment. But if you don't, the work will govern your life, instead of the other way around. Great video; thanks.

@podgemcgrath 7 лет назад

Great point of view at the end, get your priorities straight and live your fucking life.

@rossmanngroup 7 лет назад

YES!!

@amirkahvic 7 лет назад

Louis Rossmann and that alcohol trick is awesome! thanks a lot for it :)

@zulflbeatz 7 лет назад

can i use methanol?

@blubbspinat9363 7 лет назад

You can but you shouldn't, breathing in the vapor is toxic.

@skynetcybernetics9058 8 лет назад

The Lepton FLIR sensors are U$182, maybe make one and post up how you did it?

@centralelectronica7534 5 лет назад

also this

@TinkertubesLab 8 лет назад

Hey Louis, I came back to this video as it was the first one I ever watched from you and the one that made me subscribe to the channel. I just wanted to thank you for your brilliant videos which I started watching from the beginning on after subscription, and even though I possibly won't ever touch anything from apple I already learned many things that can be used at other occasions. So, thank you for your effort, keep up the good work! If I will ever visit New York (or the states at all...) I might come over to shake your hand, if you have the time.

@jtqthetieman 7 лет назад

Loved the video. Working with electronics has been a favorite for me since I started getting in trouble with a screwdriver when I was five. I just wish I could afford to get more equipment. I do have a Hakko 888 and I love that thing like crazy. It easily blows away all those Chinamade fire sticks that I stripped the nichrome out of.

@quietackshon 7 лет назад

No one cares, but the listening costs nothing. Most people just want to unload, have a rant, and get on with life.

@SkuldChan42 4 года назад

I know this is an old video, but your tutorial helped me find a shorted out chip on a video scaler I've been working on for ages.

@moochnhowzn 5 лет назад

Finally someone who makes it more simple to understand for us keen but not super educated people. I can use common sense to fix stuff and have had a good amount of success but your videos have been super helpful. Very much appreciated. Cheers from Australia...

@thedevilinthecircuit1414 5 лет назад

An IR camera app for your phone (or a mo'spensiv IR video scanner like a FLIR) is another great way to find even a mildly warm component on a board. GREAT vids, Louis!

@DonMillerCET 7 лет назад

I've been a tech for approx 40-years and enjoy watching Louis work because he is a very skilled young man, and I think a lot of folks who watch him don't realize how many years of work and effort are put forth over so long of a time to be able to comprehend circuitry and have the techniques to identify and resolve various problems. Being a circuit level tech, I dread the liquid damaged equipment because it is time consuming and the final repair is not as reliable to us, the tech, as we'd like them to be. Worse yet, is when a customer has attempted repairs themselves .. much more work for us. It is rare for me to see a good tech, much less a good young tech such as Louis. This is a dieing art, and we who dedicate ourselves to nothing less than perfection in our work are craftsman of the highest order. Too bad the pay wasn't commensurate with the skill level, decades of learning, equipment in our arsenal, and our unbelievable patience in working the circuits. I often struggle with the choice of continuing with a problem infested board after repairing multiple problems, knowing the very next repair could bring it all back to life, or tossing it aside and grabbing something I can make money on in 15-minutes or less. But it's fun, frustrating, and sometimes .. if we're persistent .. we can even make money. What I am saying here is that I hope viewers recognize that Louis is an outstanding tech, and any so-called 'trolls' or critics should think twice about making any negative comments. I myself am a high level tech and would hire Louis in a minute if I needed the best tech I could find. Good work, Louis! True craftsman.

@Sachin6896 4 года назад

Nice diagonostic skills. I liked your last decision of sending it to bin. Everything we do is for life and life should be enjoyed.

@hulk7861 6 лет назад

i actually go back and like your videos just because i really want to support you. I genuinely enjoy listening to you.

@veldo2218 7 лет назад

You're technic was simple but effective your flushing out the grounded component to confirm defective thru the use of alcohol perfect approach sorting out the problem, Thank you very very much for sharing your effective techniques

@av6966 7 лет назад

did this the other day on my motherboard, feels good when you see a professional using the same method as a hobbyist like me.

@valertube 7 лет назад

Love the wisdom at the end of the vid. Perfection!

@DavyBoySmith 8 лет назад

Bravo Louis, You are a troubleshooter extraordinaire, I love to see someone else come to exactly the same conclusions I did years ago. Do let us know how the hot air tool service (replacement parts) goes. I am a Leister HOT JET S’ owner and I think the Hakko nozzles may fit it. You are an excellent "master level" component level troubleshooter, not many of us around.

@ppdan 4 года назад

My Weller station (50W) is from 1977 and was used for over 15 years in my dads TV repair shop, it has also been my main iron in my sound & light shop for over 10 years and is now sitting in my home lab. Of course it has received different tips over years but the heating element is still the same and working as expected.

@cAmPdAmO 3 года назад

Hi Louis - I know this an old video and I have watched your more recent ones - but this is a gem! Your honesty and forwardness (is that a word?) is excellent and I think your teaching skills are far better than you think. Aside from teaching us about motherboards, their typical problems and diagnostic trouble-shooting. I think the best lesson to be learnt here is knowing when to stop, call it a day, go to the gym and meet your friends for dinner! (Sadly gym's and dinner are not really viable under present circumstances - but I hope you get my drift) Thanks again for all of your fine work, past and present. Damo xXx

@jessihawkins9116 10 месяцев назад

layin it on a little thick arent we? u lookin to get a room with the dude bruh?🤨

@semeano 8 лет назад

I'm hooked on your videos Louis! I like your work and it really inspires me. I'm a maker and I also love to fix things, but not at a such a small scale as yours. Great message at the end. Sometimes there's no money that pays for our time ;) Keep up the great work!

@rossmanngroup 8 лет назад

+Pedro Semeano Thank you!

@1969elder 6 лет назад

The best way to retain what you learn is to teach someone else. And thank you for your videos, have a great sir sir.

@Inspironator 8 лет назад

This is the first vid I saw from you, and it was educational. I also agree with your philosopy...live your life and enjoy it.

@dankerine 7 лет назад

Got a flir camera ad

@jeffflanagan2814 8 лет назад

Just subbed! Very informative troubleshooting! And even better the life message at the end! Thank You for what you're doing!

@michaelduddy4119 8 лет назад

Thanks. You've achieved a lot with your setup, excellent presentation. It' really hard to find equipment that's good and doesn't cost a fortune (a lot junk at the lower price range).

@rossmanngroup 8 лет назад

+Michael Duddy Tell me about it.

@TurboBMRProjectLove 8 лет назад

i start teaching automotive classes and it is hard especially when you talk as if everyone knows what you know (phrases, acronyms. etc) its good to have another person there to help you out when that happens.

@paulhendrix8599 8 лет назад

he has some basis videos. it's just way too time consuming to explain everything every time, he gets paid to actually repair the boards.

@laureanog1 6 лет назад

yeah maybe your explaining is a bit challenging but you still ROCK! I appreciate that you try. And, all your other info is exceptional! thks for sharing your expertise.

@ramtom9882 4 года назад

Arrived here unplanned. With you to the end. Didn't regret my time spent 😁

@RC-Heli835 4 года назад

Dude you rock so hard on this stuff man! I don't blame for getting up and walking away from the board instead of spending 2 more hrs on it and maybe fixing it. Every day we live is one less day we have. Time runs out for us all like sand in an hour glass.

@SunDragMeHere 9 лет назад

This video is exactly what I needed..finally after hearing you say it a million times I focused on P3V42. It didn't click before that I wasn't getting voltage to VIN for U6990. With only two components before it D6905 and R6905 it didn't take me long to find the issue. R6905 was reading infinite resistance. I removed it and put a through hole 47ohm resistor there (just for now). Sure enough I now have 3.38v coming out of L6995. I dont have a new LM397 to fix my One wire circuit...so I cant see how far Ive gotten. Despite that, I am extremely happy to have made any kind of progress. Now to find a cheap parts board. Thanks Louis!

@Agent24Electronics 9 лет назад

An LM397 is a common part. You can buy them just about anywhere. For example, Mouser has them for less than $1 USD each. If you're outside America, there are other places too. For cheap parts like this and resistors, capacitors etc, it's not worth it IMO to buy whole donor boards. Sure, if you need a custom IC or expensive part it can be useful, but with "jellybean" parts, I buy them from local parts suppliers - and get extra confidence since they're brand new.

@SunDragMeHere 9 лет назад

Agent24 Thanks for the tip. I did already find it on Mouser. However, I have another c2d coming my way in a few days. I wanted to have a donor just in case, like Louis says, you order the parts fix it and then find out something else needs fixing. I do agree new components are preferable. There is a place I go to for electronic parts but I think he might have to order these. Still I will check..driving 45 minutes isnt a big deal compared to waiting a few days each time. But just out of curiousity, do you know any other common products the IC is in? I might have something laying around I could borrow to test with.

@Agent24Electronics 9 лет назад

SunDragMeHere I guess I'm lucky in that I can get a lot of parts locally or on overnight courier, for one-offs. Most places would keep some stock on hand of really common things though. When you repair many boards you can get an idea of what kinds of parts usually blow, and keep a stock of those without worrying about wasting money on them: you know you'll be using them. Aside from another board the same model or similar, I can't really list a bunch of products you'd find an LM397 in - I don't know. It's a common, as in "not complex" part, but unlike the really, really common parts, like 10K resistors or 0.1uF capactors (which are in practically _everything_), it's not common knowledge where you'd find one. The time taken finding that information, finding a board etc, it's not worth it for a $1 part.

@3illlu 7 лет назад

I must say that was an amazingggg video ever. I just loved your theory BTW :D and your soldering skills probably!

@adhikarideep 4 года назад

Really loved the tossing up part to ta back of the bin... Great lesson there..

@boulder89984 4 года назад

You do this kind of nail biting work and crack jokes? You the man! Subbed.

@coldspring22 7 лет назад

Get the schematics - a great tip! After looking at your video, I found a full service manual online with schematics for my mobile phone.!

@justinwillismusic 7 лет назад

Best video on RU-vid. Excellent worldly knowledge. Thank you

@electronicatutorial 8 лет назад

You can get a Flir E4 for 1K and upgrade it free to a flir E8 320X240. (if it has the versión 2.3.0 or older). I have done it and it looks great. About tools I dont let myself be limited in that department I like to make things easier, faster more precise and simpler and good tools help me do that.

@TheGamerUnknown 8 лет назад

Does he have a continuation for this video? This awesome. I'd love to see it finished.

@louistournas120 7 лет назад

Wow. It is pretty nice seeing how it is done. You have god like powers. I don't know much about electronics. I fixed the power supply of a tv decoder but it only worked for 6 months. I will eventually get back to it.

@kjamison5951 8 лет назад

While the start of the video right through all of the testing and moving on to the next issue is relevant, it was what you said at the end that resonates more. Sure, it's important to establish yourself and to work hard to learn your craft and become an expert. But there is more to life than work and it's the balance of work and personal life that determines if you lived or simply existed. Keep making the vdeos, Louis, and keep filling them with those philosophical nuggets. Thank you for another great moment.

@Anibal_avila74 7 лет назад

hello mr Rossmann, i follow your vídeos, few month a go, i enjoy your tips, and your way of thinking related with tools and critcs to the manufacturers wont give support, thank you for sharing your point of view, i think is right, cheers from Portugal

@acrexp 3 года назад

Dude I have to say you seem to have figured out what's important in life at a much younger age than most folks, Including me. I worked myself to the point of damaging my body to a point where things are not fun anymore. I made lots of money although I look back now and see i did not charge enough for a lot of things but hindsight is 20/20. The moral of the story is work hard but take the time to smell the roses along the way.

@leightonford8404 4 года назад

Smart decision my friend i was working on something similar and the results were the same . I just gave it back to the customer and said the board has to be changed. I ain't wasting my life on that.

@8953147 7 лет назад

Thanks for your time and effort on showing the details!

@davegeorge7094 7 лет назад

I blew polarity protection schotky diode when powering Macbook my solar buss to the spliced MAGplug. I saw the glow through the white plastic near jack at power up! Love the Macbook black PCB and engineering. I replaced the 1mm sized diode pair but didn't need to since I will never reverse power input again. I also love saving 100-200 watts 24/7 by not using a desktop A/C. I use digital voltmeter on microvolt range to find big voltage drops cause by errant shorts. Make a cell powered op amp kludge with test leads for finding milliamp shorts.