HP Spectre 13-4050 No Charge - LFC 

I am a HUGE proponent of electric screwdrivers of any type. Whenever it is possible I use power tools for screw removal. I spend aprox 30 years swinging and a hammer and my wrist/elbow/shoulder joints are pretty much filled with gelatin that used to resemble cartilage. Save your body from repetitive motion injuries ANY time that you can.

16:13 me when I should be looking for a job

"where's my alcohol" i feel that

Normally the diode across the rails is for transient suppression (Zener ). Input protection is in series with the positive rail.

Love your videos, you always explain what you’re doing or looking for in terms I can understand. Keep up the great work 👍

When I was working for HP as a field engineer, I worked primarily on laptops because I was the only person in the area that could fully disassemble a laptop, replace the board, and put it back together in 30 to 45 minutes depending on the model. I sure as hell didn't do it with a manual screw driver. When it's your profession, it's a necessity for various reasons.

When your job involves removing and replacing hundreds of tiny screws on a daily basis, an electric screwdriver is less of a convenience and more a health & safety necessity.

im so glad i found your channel. There is so much to learn. Greetings from Germany.

I love your electric screw driver!

by using voltage injection i learned from you, i've managed to repair my sister's old Acer laptop which was shorted when its DC adapter plugged-in. and guess what, the shorted cap location is far from the DC jack too. so big thanks to you Graham for share us that technique. 😉

18:02 look closely between the power plug and the keyboard plugin(I think-big white plastic connector). The is an arch of separation between the edge of the board and inner of board. That is the hidden trace to the ceramic capacitor. The trace goes under the keyboard connector.

Excellent just came across your RU-vid site by accident and I have leant so much and find all your videos very interesting. Your knowledge is excellent and you explain it well

I watched this video with laser-like focus the whole time - fascinating.

Hi there , it was very informative tutorial video . thankyou to zoom in on the mainboard to allow us to see with all details . keep it up . thnx

Please give us more basic videos like this thank you sir ✌️✌️✌️👏🏻👏🏻

nice work on it that great

21:20 you forgot to put back the capacitor on the left off of the DC port pins there are 2 horizontal pads there. Right by the huge ground pad you put solder on during testing.

I had a dead short at the charger input on an Envy 23 this week and I did voltage injection. Like your example, the shorted capacitor was nowhere near the input, which was a surprise. It really does take the guess work out of the process no matter how well experienced you are. Nice job!

Happy Thanksgiving from the U.S.

good job.I have several of your videos and am impressed.You explain things in a very understandable way

Well Done Graham!

Great job, always learning, keep up the good work!!!!

This happened to my exact one a few months ago!!

Well done graham :-D You have had some real hum dinger power faults on previous boards. I was thinking similar to you, it has to be in that little square... Nope!. So that dead cap may have been the input to the charge circuit.

I sure would like to see you do this with a couple of cheap video cards. I have purchased a few broken boards from ebay trying to learn the basics of trouble shooting and fixing them with no success! Thanks for the videos.

The last 3 pins are "clock, data, and temp" lines. As always good video. 😊👍

5:32 lmao! Let someone say that after doing this day in and day out for years, that electric screwdriver is saving us from more carpol tunnel

Great job

i use a driver like that my self great video keep it up realy enjoy them

Loud cars and MCs speeding past is a bonus.

I can see a via, not sure, below 1st inrush limiter (a mosfet) and left side of the cap 12:45, through which the dc jack voltage is connected to the shorted cap removed. As adamant said it might be as a supply to control the 1st mosfet there or something else there.

Nice work.

great work 👏

Adamant IT here in Australia mate they will not repair the motherboards they make you buy a new one sow i repair them now but i use a big magnifier as my eyes are not what they where thanks for another top video stay safe mate

Thanks!

good job

I say goodbye forever for your VICI 99 multimeter :))

You forget to re-solder tiny cap back on left corner of the board.

Lol about the screwdriver. 😂👍

16:43 Because it’s a HP! 😂

Voltage injection saves a lot of time. 🙂👍

5:42 C´mon! the electric screwdriver is the best that happened in the last years. I have the version with 2aaa batteries, i would love that mine have usb port, i use it in EVERY work

You definitely have the knowledge of what you are doing now all you need are the proper tools believe me you need a good a soldering iron ( JBC or HAKKO FX951 ),heat gun ( quick 861dw ) and the most important tool a MICROSCOPE 🔬 doesn't have to been an expensive like amscope now a days there a lot of cheap alternatives for around 500€ with light,camera,barrows lens. One tech to another.

I got a bone to pick with you. Lol. I saw your game max builds. And liked them alot. But I can't order no parts cause I unfortunately live in the u.s. which is unfortunate, but I deal with the hand I'm dealt. Lol. I hope to see more of your custom builds and fix videos in the future. ✌

1:01 lol sports car/motorcycle reves

I have the same laptop and a capacitor cracked in half in the same area. Thanks.

hi bud thanks for the great vid

Why do you never use the powersuply? you often immediately see whether there is a powerdrop and / or of using the laptop power!

sir I am a big fan off you

Awesome video, and it's been two years... but.... You missed a cap on reassembly...? The one you removed at 13:14. At 21:54 it is still missing.

I was screaming at the screen: "This big cap below the mosfet!". You: remove mosfet ... remove three other caps... me: oh, finally, that cap is getting attention. you: remove the cap. -> NO, not this one either! conclusion: guessing can be a big waste of time, indeed.

7:31 DC JACK

this guy is doing heart surgery but on computers. the precision.

Graham please do laptop charging complaints & not changing, charging sections videos

With Thermal Imaging Camera your life would be 100X easier, you just plug in the DC jack and find that shorted capacitor .though the good ones are not cheap .

Sorry but before you even took off the FET I was shouting big cap between the connectors. But I was wrong.

Oh Graham, it is a _reverse, zener, one way, rectifier, electronic doodad thingy diode_ . Good heavens man, get with the program. 😀 Don't let the critical bastards get you down. 😎 Remember, those who can *do* and those who can't _watch RU-vid videos and as a result are experts_ . An expert of course is a person who can't spurt anymore hence the ex part. 🤭 Let those prats try and produce videos and see how they would go and we both know they couldn't do it. Like your work and please keep it up. *Thank You* , from a grateful subscriber!

I have also the same laptop like in this video. This is my first time using the multimeter. I did the same like you did measuring the DC jack with the power on and by me is measuring from the DC jack cable 19.72 so it's a little bit less. I dont know if that's the problem. Also you measures the non ground pin from where the DC jack is connected to the motherboard, I also measured that but it's not beeping to me. I also followed another video from you and you did a different measuring method measuring with continuity mode the coile power supplies to the motherboard which you got bad results of low ohmns. I tried also measuring the coile and multimeter is giving me different numbers from m ohmns to k ohmns and go back to m ohmns again and down to k ohmns and so on what does that mean? I also tried to measure with continuity mode again the capacitors around the motherboard but its not giving me any beep sound to non ground. But there where little capacitors not giving me any beep sound to both sides. I dont know if it normal to some of capacitors. Do I something wrong? What could be the issue here and how can I fix it?

No it's not absolute that capacitors of the same size are the same value but you are 100% correct in guessing that it is highly likely. If you can count one 1 thing it's a manufacturer's desire to make money. Making a bunch of any item the same exact part saves money off the BOM.

I watched your video so many times, I like the way you work. I have the same issue with my laptop and B20N03 CGL0390 mosfet looks burned-out. Can you help, please?

Multilayer boards can be really tricky. Components can be on the other end of the board and on the other side.. Real pain in the A$$

Hey, what if the laptop charges but won't power on. When I press the power button nothing happens. Even the power button doesn't light up. But when I long press the power button, it the power button flashes. I have the same laptop as in the video.

@ Adamant IT where/how did you learn to test motherboards, worked in a PC repair shop 6 years never learned how to do this, just replaced the mobo.

keep posting repair

Please what is the rating of the guy (I think diode) just in front of the mosfet that you remove. I have a similar problem but that guy(diode) Is causing the short-circuit.

I see his work in retrospect (without a thermal camera). Admirable repair young Graham, it would be unfair, after watching such videos, not to recognize it like that. Sincere congratulations. All the best.

Thanks, Adam, awesome video as always. Can we know the model of that camera you are using to film what you are doing on the computers?

Hi i have a similar hp laptop envy x360. It can power on with battery but no charging lights and cannot detect charger. There is no deadshort on 19v input .Tried following your guide on finding shorted caps but cant find any. The 19v can reach the charging IC 9538bh, but output only 1v to the board. Can i assume it is a bad charging IC? Thanks a lot!

Why Didn't you not check traces on the other side of the board there ls more power traces

Hello I want an advice from you about changing a power ic, from a "gpd win2" device.

hoping to see a desktop pc lfc soon :)

I have seen several of your videos -but certainly not all- is there any video explaining what may happen to people if they inhale soldering fumes? Do you have any bad experience, have you ever experienced any kind of injury in the work you are doing? Do you need safety glasses for soldering? Is there any way solder may start to explode like when you throw water on fried oil? If you don't have any such a video already, I will be extremelly interested hearing from a professional addressing health and safety issues. People in UK take health and safety in workplace seriously. I remember you mention a lot about lithium ion batteries and that they should not be overcharged nailed pinched etc. But I do not remember anything on soldering.

Great video. Are there any “rules” surrounding what volts / amps you consider safe for voltage injection? I wouldn’t want to Chuck too much into a motherboard and inadvertently fry an expensive component on it

Bet those that comment about the electric screwdriver walk everywhere and don't use a car 🤣

Hi, just saw your video I have the exact same laptop with the same problem. All the sudden it just didnt turn on anymore.. Can I send it to you ?

You forget a cap. Really small one next to the connector

I read no charge like your not charging the customer......I'm a doof!

your voice d same from spong bob hahaha

i love you

Sounds crazy but i do a lot of screws and still only have manual ones i just prefer the control and not a fan of bits going into screwdrivers prefer full screwdrivers what scope/cam are you using to view that board as looking to get a replacement stereo or tri scope

I am having the same problem and when I check continuity on the capacitor that you replaced it beeps on both sides. This is saying that it is shorted correct? Also what size did you use to replace 10nf? I saw the code on your strip was 106.

almost sure it called TVS DIODE

Do you not have a thermal camera yet?

on the left bothem corner righet above the white connector you remove cap but don't stick it back ?

if you had the schematics......why didn´t you look for the value of the capacitor there?

Can I use without replacing this capacitor? I removed it and no more short.

The diode selecting battery or net power

I have a question one that no tech guy could tell me exactly what is happening oh pls pls respond thank you for your videos and for your response if anny heheh so I have a zotac nvidia gtx 1080 amp edition ! windows 7 and windows 10 tested this so hmmmmmm how to start the card is working but let's say I wake up in the morning and I start the pc I see on msi afterburner saying 34c the system is idle with 34 processes so no latency or crap like that, even latency moon pass it but at some random time in gpu temp in msi I see a spike from 34c to even 29c for a 500 millisecond now at this point I have to take the card from the slot and put it back in pci slot and problem solves itself till next shut down or a few hour turned off it's annoying and I think there is a interrupt in the system when that spike occurs but can't really detect it ! tried an 1080ti and 1060 and they don't have this problem we have no idea why that happens ! bad cap maybe ? thank you : ) edit 1 different drivers and old ones tested all drivers are ok no conflicts no errors no funny lines or sings of bad rendering not using it in full load so always fps cap set up no overheating tested it on another mb and same result even after getting heated same problem all pads looks ok other gpus work ok untill I don't take it out the slot and put it back the problem will not go away ! edit 2 setting msi ab to monitor only the gpu temp set at 100 millisecond and I can see the spike for that 1/10 of a second I take the card out and put it back, bingo is working till I turn off and restart the process of starting and then again spike and then I take and put it back in slot edit 3 even changed the paste can't see a defect on the board or a burn or anny strange things edit 4 thank you much : )

a che temperatura tieni la stazione ad aria calda? e se posso chiedere che marca e modello è? weller? grazie

What I find wird is that major makers like Asus had by 2016 started to make their laptops charge via USB, but now have gone back to old style charging ports. Cost saving?

Kindly tell me how u know the DC jacket terminal e.g positive and negative terminals ? And which wire and liquid you are using for cleaning the mosfet terminals after removing the mosfet?

A new laptop with no charge bad Hp

Can you provide a link where to download macbook testing tool, please

My laptop model is hp probook 450 G5, core i5 model, for last 3/4 days my laptop is stuck at 79% charge. When it reaches 79% charge, the battery status bar shows pulgged in, but no charge happens after that. I've updated the drivers & check the battery & AC adapter health by hp battery health tester. What should I do?

👍👍👍👍👍👍👍

Okay, i love watching these video's, butt wth is he saying at the beginning of each video? hello A.....????

put a link for the rechargeable screw driver you are using to.

Adam what camera do you use. Can you tell brand and model please ?

I don't understand why people can't realise that 5-10 seconds of saved time per screw multiplied by the numbers of screws per month is a lot of time and money saved!!

i hate these kind of shorts that u cand find!!...if there is a burnt one, no problem! but if u have to finde the dead componets its could be difficult and often needs hours to find the right one....