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I repair a dead LG Flatron W2252 LCD Monitor, the monitor won't turn on.
I check the power supply and replace some electrolytic capacitors which had leaked and failed.
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Опубликовано:

27 мар 2019

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Комментарии : 70

@jameswilkinson8851 3 года назад

I actually found this video after fault finding and fixing my LG monitor (the 24" version, W2452T), just to say the PSU looks the same and replacing the capacitors brought my dead screen back. (In fact it's better than it was, I think it was suffering from bad PSU smoothing for a long time). I bought it new in 2009, so looks like 11 years is the life of these caps, the screen in question was on for most of that time. So, if you have a dead LG screen, or perhaps it only sometimes comes on, but sometimes is just dead, DO try this. Be careful of touching the back of the PSU (Especially around the 400v caps (!!)) but other than that it's a beginner repair that works really well. Oh, and cudos to the video maker, took me ages to work out how to open the case, whish I had seen this first!

@darattaqwa 2 года назад

How should a beginner discharge the 400v capacitors before attempting to replace them?

@Ophspring 2 года назад

Thank you so much! My old monitor works again!

@rogerd4559 3 года назад

The best way and fastet way to open the 2252 is at the top of the screen. Place your fingernails of both hands between the top bezel and the screen. roll the bezel up and back away from the screen. the top of the bezel will pop loose. Then proceed to do the same to the sides. The bottom will fall away easily. If you attempt to pry it off with an instrument, you will most likely break off the delicate tabs holding the Bezel in place.

@TechGorilla1987 5 лет назад

This is also the same procedure for disassembling the LG W1952TQ-TF. I replaced the 1000uF 16V capacitors on the secondary side as they were puffed up quite a bit. Thanks for the disassembly! My wife really likes having 3 monitors!

@TheDefpom 5 лет назад

I'm glad it was helpful.

@mr.headcrab31 3 года назад

Thank you for this.

@mk-cm8vp 3 года назад

Few days a go I picked W2252 after someone left it on street. same simptoms as in vid(did not turn on) so out of curiosity I did deasembled it, and typed in YT if there any useful info there, bumped in this vid, folowed steps as described and bingo two day later is working!! SO THANXS SO MUCH FOR BEST TUTORIAL FOR THIS TYPE OF MONITOR ALL GOOD IN FUTURE PROJECTS AS WELL!!

@TheDefpom 3 года назад

I am glad that it was helpful.

@Goldandtravel 5 лет назад

Nice easy fix Scott 👍

@debeeriz 3 года назад

thanks l had the same monitor but only 3 caps were bulging but i did replace the lot and now it works ok

@edburgerman1369 Год назад

I had one of these I got it late 2008. The backlight went out yesterday. It lasted 14 years for about $200. Great deal.

@allthegearnoidea6752 5 лет назад

Always nice to save something from the land fill. Great Video regards Chris

@TheDefpom 5 лет назад

AllTheGearNoIdea - yep, it’s an old monitor but it works ok, now.

@5Dale65 2 года назад

I use such monitor since 2009. Today it just didn't power on all of the sudden. Completely dead. So thanks to this video I disassembled it and found puffed caps with electrolyte leaking out of them.

@TheDefpom 2 года назад

I’m glad it was helpful

@kibosabi 3 года назад

thanks mate

@davidv1289 5 лет назад

Nice repair! I was surprised you didn't check the mains fuse while testing diodes. If you have the camera set to face focus and it can't detect a face .......? Got my "I fix stuff" mug the other day. Love it!

@TheDefpom 5 лет назад

I'm glad you like the mug!

@apmidtube 3 года назад

i changed capacitors in power supply on a flatron L1953S (seems similar),now it works but the colours are a little different (more harsh and letters seem like pixelling )... any ideas what might that be or what should i check out again?

@maselo961 7 месяцев назад

I've had this LG monitor for 15 years and now it has a peeling screen, but I can't find a compatible anti-glare film (polarized angle?)

@isoguy. 5 лет назад

Stuck together like modern commercial aircraft. Sounds like you are like me, that is prefer some physical fixings. Thanks for sharing

@danishnative9555 5 лет назад

I'm viewing you on an LG W2340, which I don't really like since it does not have the anti-glare screen. It's almost always bad capacitors (or worse bad CCFL's) on these older monitors. I will just pitch this one when it goes to heaven and get newer LED back-lighting. Guess LG saved big bucks on leaving the fasteners out.

@wonderfulworld5134 Год назад

The FET semiconductor on that aluminum heat sink. Is it that? Look and see what numbers are on it. Is it a 04N60C3 ? Get a new one from Ebay and soldier it in. It may be that. Maybe on Ebay you can find that power supply after you get the numbers off of it. I got a repaired one sent through from China and it worked.

@martinda7446 5 лет назад

PPS I've had a couple of these LG monitors and those electrolytics are it seems the most reliable capacitors on the planet. Reliable and fully guaranteed. You can rely on them to fail - guaranteed. They fail so reliably its funny. Easy to get in and repair though.

@danijel124 4 года назад

I just have one question: Is it important to put those cables at 5:30 back the same way or not? Does it matter? Can i swap the pink and blue one?

@dkmmhdk 5 лет назад

you might want to try a HDMI to DVI adapter, it is just a connector so not too expensive. You can also get DVI-HDMI cables.

@catalin77ursu 8 месяцев назад

My unit doesn't have 22V connected and the jumper which bring 22V to the cable from psu to mainboard is missing, and caps for filtering 22V are not present on psu board.

@Wayner71 4 года назад

As an English speaking Australian I can understand everything you say. As I still use an old LG W2052TQ monitor this was a very relevant and informative video. Do they still make LG monitors this poorly?

@LanceThompsonKssooner 4 года назад

I did all that because it wasn't staying powered up. Fixed that problem but now the screen is streaky and blurry. Something else must be fried as well.

@titodejesus6238 4 года назад

Man THANK GOD FOR THE CLOSED CAPTIONS!!!! otherwise I understand squat about what you say.

@MrDubje 5 лет назад

2:40 What a fiddle to get the damn thing apart. I use some old credit-card style cards that you get in several shops, but never use again... otherwise known as wallet filling. 4:40 That is a very efficient design! All screws have double functionality. Whether it is a proper design... no comment, lol 8:52 It's always the caps! 10:12 Mat-su-shita or Mat-su-shit-a, you decide. Or just call them Panasonic, it's the same. Good brand! 16:12 Mixing is generally considered bad, but I do share the opinion that when something is lead-free soldered, you can't harm it by adding leaded solder... It just lowers the melting point and eases the soldering process. The other way around... just don't. From memory it has to do with the "plating" of the vias (if a board is double-sided). Because of the fact that when removing a existing component always leaves a small quantity of solder in the via or on the pad, it is considered bad practice to use another alloy to solder a new component in. It has to do with the possibility of mechanical stress causing the joint or solder to come loose from the other old alloy. Or just that it makes for a weaker joint, but that is not an issue here. Not sure. I'll ask our IPC trainer when he comes over again. 21:40 MS? main-switch, master switch? It probably has a stand-by supply, and the power is turned on via this signal...

@FireballXL55 5 лет назад

If it is a 1080 monitor then it could be worth getting an HDMI to DVI adapter. The easiest way to see if it is powering up is to connect the lamps and signal lead, if the laps light it is probably.good. They have built monitor chassis like this since early 2000, nothing can move when it is assembled so what is wrong with the construction. It will say in the user manual not to use screws over a certain length, I would bet that most wall mountable screens would be damaged by using too long a screw.

@darattaqwa 2 года назад

What could be faulty if the monitor (LG FLATRON 19”) has power but get no signal message, the menu buttons don’t work, I’ve tested with several different laptops / desktop computers

@rickyseddon4786 2 года назад

I pulled apart simular model same thing the board are not mounted lol

@TedProMarket 2 года назад

Hi ...How much are those little things you put in there

@TheDefpom 2 года назад

The capacitors vary in price, from 50c to about $10 each.

@stigonutube 3 года назад

im here because my trusted Lg w2252TQ just would not turn on this morning, was aok night before, i got 2 of them so looks like this will be the problem ,same symptoms no light blue or orange just dead :(

@maicod 5 лет назад

Scott did you repair it for someone or just one you can keep now ?

@TheDefpom 5 лет назад

Maico - it belongs(ed) to a friend, I gave them another to use, but I think they may keep hold of it and swap.

@maicod 5 лет назад

OK It was interesting to watch you repair it.

@Name-gl6lf Год назад

hey, black ones are 1000uf 16v, and blue ones are 470uf 35v right?

@TheDefpom Год назад

The colour is irrelevant, that depends on who made it.

@abeleski 5 лет назад

I would have liked to see you test the caps to see if indeed it was the caps and which ones or perhaps just a dodgy joint that you reflowed. You threw everything at it in one hit so yes now it works but WHAT really fixed it? Start off with measuring voltages as a first point too would have made a better investigative troubleshooting video. Thanks for video. Keep them coming.

@TheDefpom 5 лет назад

abeleski - they didn’t need to be tested, the bulged ends and blown vents are all you need to be sure it’s failed.

@abeleski 5 лет назад

@@TheDefpom hmm, i must have spaced out and not seen that part

@zx8401ztv 5 лет назад

Smashing repair, the crap-a-citors are always crap brands, i use panasonic ones from r.s. Lead free solder is cack, 60/40 rosin cored thin solder is what i like :-D. . I've just done a 32 inch Technika (Tesco crap) from 2010, psu problems (No supprise), transformer drive capacitors went o.c and a dead electrolitic on the secondary rectifiers. 8 years old and the ccfl back lighting still works smashing, i can't see leds last that long.

@martinda7446 5 лет назад

Matsushita is Panasonic, it is the company that covers Technics and Pan.. Though because those caps go all the time, every time I wonder if they are really 'proper' as I agree Pan..(can't be arsed to spell it...Then I wrote this five times longer) are some of the best available.

@zx8401ztv 5 лет назад

Martin D A Well they seem decent and must be better than luxon or capxon or similar flong chong wong pong types lol. For an old set i don't waste money on nichicon or similar grade caps. Panasonic seem ok to me.

@martinda7446 5 лет назад

@@zx8401ztv Ha ha I was sort of agreeing with you, I think LG either entered into some strange arrangement with Matsushita to supply ultra cheap crap or they were knock offs. I can't imagine a big company using knock offs...but...maybe. Also, a bit of a hint, if you over rate your cap by 20% for voltage and make sure it keeps under its temp rating by same it will last a hundred years - no kidding. Panasonic is great I agree.

@zx8401ztv 5 лет назад

Martin D A A hundred years lol :-D, that's no good, i don't want someone digging me up to fix there antique Lucky Gitstar tv :-D

@martinda7446 5 лет назад

@@zx8401ztv Just put it in the small print of your guarantee. Do not dig me up in 100 years. (This is why lawyers get paid so much..they will be digging you up in 99 years or 100 years and one day).

@RaisinsFS 10 месяцев назад

Hello Can you help me, when i plugs the monitor into the electricity, the light comes on for a second and then goes out and nothing can be done, then I have to wait a while, unplug it and plug it back in and it happens again, I also have a video

@RaisinsFS 10 месяцев назад

Note: when I plug it in to electricity, it makes a strange sound for a second like a very fast ticking and then it stops, that's when the LED goes off, I managed it once when I held the button and plugged in to electricity , it made a sound that sounds like when you turn off the monitor

@evandolan1 4 года назад

How do you reset to factory settings

@TheDefpom 4 года назад

Sorry I don't know, probably in a menu somewhere.

@martinda7446 5 лет назад

PPS The ones I have seen popped open easily.

@petermartin6031 5 лет назад

Is this the one you did the other week on a stream??

@TheDefpom 5 лет назад

Yes, quite possibly, I did a couple of monitors on different streams.

@petermartin6031 5 лет назад

kiore22, yes, the ‘pink to the left’ jogged my memory!

@kordoz10 3 года назад

3 pcs of 1000uF / 16Volt. and 3 pcs of 470uF / 35V

@claudioarcadexlab6397 4 года назад

Funny fly sound on 4x speed..

@deedinky1 5 лет назад

A ring saved my wife's life from electrocution.

@pietrononame4945 5 месяцев назад

2:40 Dont use metal tools for the plastics people!

@vladimirsamas3097 3 года назад

i have the same problem but i dont have caps XD

@martinda7446 5 лет назад

It's got a divvy eye. Poor thing.

@OMGWTFLOLSMH 2 года назад

I wonder how many thousands of these LG monitors have ended up trashed because of LG's shoddy components. They should change their name to LB = Life's Bad.

@TheDefpom 2 года назад

It isn't just LG, this is something that occurs to all brands, capacitors are consumable items really. There will be many many failed electronic devices (not just monitors) that can be repaired and continue to be used with a little bit of effort and small cost.

@MrCarGuy 2 года назад

Nonsense. Mine lasted 14 years of near daily usage before I noticed capacitor whine indicating they're bad. The Samsung I had from 2006 lasted 10. So a bit better

@alexcorona Год назад

@@TheDefpom I repaired a guitar amplifier from 1959 by just replacing the caps. It actually had Ducati(italy) capacitors, I thought they only made motorcycles but apparently electrical components as well!