Added: 1 year ago
From: Maxxarcade
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  • my lg lcd is also sudden dead! No light, no power, is it the problem related to the capacitors too?

  • Great video, I have the same monitor and turns on and the picture shows for a brief second and then it goes blank but I can almost make out a ghostlike image, like a bad LCD inverter on a laptop. Any suggestions which componet to check on the power/inverter board? I'm new to components.

  • Nice classic ibm pc keyboard.

  • i have excact same problem at home, i want to try n fix it my self. what capacitors should i use?? .. how can i know which are the correct to use, and is it very wrong if i use different volts / anything else.. ??

  • @usernaameunavailable You can go up a step in the voltage rating, but try to keep everything else the same. Use low impedance 105 degree caps. Also get the proper diameter and height.

  • Thanks helped me fix my monitor. I would have thrown it away. To think how much is wasted when most things could be fixed easily. I not sure but I fear when the US bring in the ACTA (Anti-Counterfeiting Trade Agreement)bill this kind of knowledge will be illegal. THIS KNOWLEDGE IS ANTI CONSUMER, ANTI CAPITALIST and totally illuminating. Thank you again.

  • @Aniaovalstudio I don't think repair will be illegal, only reverse engineering for the purpose of copying.

  • thanks, I have a monitor of this same model (made one month after yours was) it messed the bed and wont power on, i will check my caps as well. going to try a sharp knife to get the plastic border around the frame off ...

  • @TechnoW1zard A sharp knife would probably be bad news LOL. I think I just used a small flat blade screwdriver to get the corners, and then just pulled on the rest of it a bit at a time.

  • I replaced 3 caps like in this video but now when I turn it on I get a screen for about 2 seconds and then back off. The blue power light stays on the whole time. I can press the source button on the bottom and get it to come back on and it says digital on the top corner but then goes off again after 2 seconds. Any ideas?

  • @jwhitt78 Nevermind I figured it out. I did not plug in one of the plugs LOL.

  • @jwhitt78 I was just about to say, was it one of the backlight plugs? That will certainly cause that :-)

  • @Maxxarcade That was it, and I also want to thank you for making this video for us. Like others said, you have saved me a bundle of money with this.

  • @jwhitt78 Cool, glad it helped! I hope to do more videos like this in the near future. Just been really busy with my job these days, and haven't had much time to do stuff at home.

  • Great video, I was just going to toss my monitor. I had 1 bad cap 1000uF 16v. Replaced with 1000uF 35 V and it works fine.

  • than again it on its second set of caps and its 12 years old :)

  • i replaced my caps last year. still working but now the outer case is starting to fall apart

  • Thanks for the walkthrough! i was able to remove the casing to my LG and seen blown capacitors as well. Time to see if i can save $150!

  • @mittimcom Cool, hope you can get it going again! Be sure to use Low impedance caps of the proper rating and physical size. I usually get them from Mouser Electronics. 

  • K So i found 2 bad caps with rounded tops. So i went to radio shack to buy new ones all they had is 1000uF at 35v and the bad one run at 1000uF at 16v so if i put a higher voltage in what would it do?

  • @STORMINNORMAN800 It would work fine as long as it fits in the space you need to put it. But the problem is, most caps at RS aren't rated for low impedance power supply circuits.

  • @Maxxarcade Thanks man! It worked I will change all the caps with the right ones in the future. Its working great right now! :)

  • i was going tograb this display but for a lack of ventalation i say NO. i use dells and they ventalate alot :3

  • How did you manage to take the "front bezel"??? I am trying to open mine up and remve the damn bug inside the screen ... just worried that I will break the bezel by pulling too hard. Shame they did it sooo complicated!! Y not using damn screws lol

  • @Bimi82uk There are plastic latches, similar to what keeps the old Xbox360 shell closed at the back.

    Look closely at the part 2:02

    I think you have to use a flat tool like a razor blade to wedge between the seam and push down on the front part of the bezel to unhinge it from the tab. There is a screw securing the front bezel; i forget where exactly it is, but i think it is under the silver cover at the front bottom.

  • Thanks Maxx! I have hope to fix mine. Kinda odd and coincidental that I have the same monitor only a bit older (by few months) and the very same capacitors were blown. Anyway this helped me a great deal!

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  • Thanks for this video... i couldnt figure out how to open this monitor i got for free.. problem with it was i'd turn it on it'd turn itself off.. i figured out from this video how to detach the snaps around the monitor frame. Turns out it's bad caps on the power supply board.

    And thus i get a nice monitor for free, and using it to opst this comment right now,. Thanks again.

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  • My girlfriend has one of these monotors, but IMO, It doesn't compare visually to my Samtron 77V. Her LG W1952TQ gets that rainbow effect with color and shade separation where you see bands instead of a smooth transition from shade to shade and throughout colors. She has a 1gb GeForce 210 at max quality, via a DVI connection.

  • saved me 50$. Thumbs up

  • thank you sooooooooooooooooooooooooooooo­oooooo much man

  • This video just saved me over $200 on a replacement monitor! My LG 24" suddenly quit working. I disassembled it exactly as in the video, found 3 blown capacitors, easily identifiable by rounded tops, replaced them with 3 new caps from Radio Shack, and now it's working perfectly. Note that I replaced all the capacitors with equal uF rating caps but higher voltage ratings (all they had in stock at Radio Shack), it seems to work just fine. Now I don't have to buy a new monitor! You rock!!

  • @ejdriscoll Cool, glad you got it going! I usually recommend replacing all the caps in the power supply, but that should keep you going for a while at least.

  • @Maxxarcade I wish I could have replaced them all, there were 3 bad ones and my RS only had 4 in stock ! I wasn't even sure it was going to work at all -- now that I know it actually works I would take the time to replace them all if I had to open the case back up again. Thanks again!

  • i have a similar monitor that is having some problems... none of the caps looked to be blown however i went ahead and replace 6 of them. id didnt fix it now i believe it is the transformer.

    My question is where do i get a new one? i haven't found any videos or any websites on replacing one.

  • @AMWille wow i have bad spelling/grammar

    break down... replaced caps - not the problem  Believe to be transformer - where do i get a new one?

    thank you

  • @AMWille What are the symptoms? Are you referring to the backlight inverter transformer, or another one? What's the number on the transformer?

  • @Maxxarcade when i turn it on there is a high pitched hummm it turns on for about 5 seconds and then turns off, the power button still indicating its on

    after some research i thought it was a blown capacitor on the power board after switching 6 of them and puting it back together it still did the same thing... the humm appears to be coming from what is the transformer (the part you indicated in the video that looked like it had heat damage)

    the numbers on the top read

    EEL-22W

    0518 LCTJ12..

  • @AMWille it looks identical to the part in the video that you said it looked like it had heat damage

  • @AMWille Hmm, I'll have to look into that. It could be the transformer, or the circuit that drives it. Could also be a bad backlight tube. Does the screen light up normally for a few seconds before it goes out?  If it does, look at the screen closely under a bright light and see if the picture is still there.

  • @Maxxarcade yea the screen lights up first and then dies... it does still have a picture very faintly.

    well regardless i need to replace that part (now anyway)since i pulled it off the board slightly damaging one of the leads

  • @Maxxarcade

    Bpgrimm = AMwille

  • Comment removed

  • @Maxxarcade Hi Thx for the vid. This is the same issue i m having with my LG 1952TQ monitor. There is a faint image there under a bright light.

    My monitor unforchantly had an non concussive blow to the top of the frame with a louisville slugger.

    It did happen to have one blown cap that i replaced.

    P.S. plz rep back soon.

  • How often do IC's, resistors, transistors and mosfets fail? I know it's mostly cheap capacitors.

  • nice tutorial.. wondering if u can teach me how to disassemble that monitor? better if u can email me some pics on how to disassemble it... i have the lg w1642s very much similar to the one that u have in the video..just a bit smaller.. i want to open it to make a wall mount at the back.. because its a non wall mount lcd.. email is hookupchick@yahoo.com thanks in advance :)

  • is it possible if you do a mini guide on what type of caps are bad? (brand wise.. etc)

  • this is the exact same monitor i have no kidding same model and everything

  • I was actually given a free, broken LG 194WT LCD about 2 years ago that had bad caps (wouldn't turn on). Spent a few minutes replacing them and all was working again. :) It's in great shape like yours; no scratches, no dead pixels, etc.

  • My LG Flatron W2243T was made in May 2009 and still working fine after a year. I hope LG is using better caps now. Mine doesn't make any annoying beeps too.

  • @wildbilltexas The beeps can be turned off, but they never bothered me. On my 30" monitor, the beeper is necessary, since there's no on screen display.

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  • I have a 42" Philips HD plasma TV that wont turn on. Replaced all caps on one board and in the power supply, stil no luck. Any suggestions?

  • I wonder if LG will learn a lesson on using bad capacitors by watching your video. :-]

  • @ThisGuyFrritz I don't know... But I hope those same crappy caps aren't in my $1,200 LG W3000H too!

  • Great job Aaron, bit of a shame about the bezel but some of those things can be a right pain in the butt can't they. Still worked out real well for $30 ish.

    TFS

    John UK

  • @orbiter8 It still snapped on tight too, despite the broken latch. Other than some scratches on the base, it looks like new.

  • @Maxxarcade That's great then my friend, all turned out well.

  • I thought it was really important to match the uf rating.

  • @pepsiru1es92 Depends on the circuit.

  • You make it look so easy . Keep the videos comin ! I might be slow but i,m learning!!!!

  • In addition to the bad capacitors, I have also seen bad backlight cold cathode tubes. They overheat in some way, get shorted out and burn the power supply at the same time...

  • @msylvain59 Yep, they start to get dim, then turn pink. After that, they start to flicker, which forces the inverter to repeatedly supply the higher current needed for ignition. Sometimes the wires get brittle and short to the frame of the screen too.

  • Geeeez, u did it again !

  • Great video, thanks for posting! I enjoy watching repair videos.

    As for a modern model-M keyboard with excellent "clicky" switches, black, and USB - check out Das Keyboard or Filco. I love these keyboards, I have one for home and one for work. They aren't cheap, but well worth it.

  • @bfriesen75 Ya, a Das Keyboard would be sweet. I might have a look at the new Unicomp keyboards too. Those are the actual Model M design, since Unicomp bought the rights some time ago.

  • great stuff mate thanks for sharing

  • Have you got any videos showing how you change the capacitors? id like too see that

  • good repair! such a shame so many new display panels (large and small) are let down by bad caps!

  • meh.. instead of adding that stupid piezo beeper they should have spent the money on better caps instead.

    but then again.. they probably used those caps on purpose.. to make it fail a bit after the warranty ran out.. as usual in these throw-awa-days =/

    BTW: did you replace the caps on the controller board too?

    i can't count the LCDs i've fixed so far. usually only the caps are at fault.

    and most of them are just over 2 years (warranty period) old.. coincidence? probably not.. lol

  • @Knaeckebrotsaege He's really a nice American man.

  • @ShitFromShinolla uhm.. what exaclty does that have to do with my posting...?! o.O

    but yeah.. i really enjoy watching maxxarcade's videos :)

    i would also do those repair / howto videos if my english wasn't so awful (writing stuff in english is a whole different story than actually speaking it...)

    i zound like ze typpikal german tryink tuh spik inklish unfortunately =/

  • @Knaeckebrotsaege You sound like a nice German man and not a Nazi German man. How do you feel about Hitler? Did you vote for him or the other guy?

  • @Knaeckebrotsaege I left the control board caps alone because I was feeling lazy (and sick with a cold). If it ever starts to glitch, I'll know where the problem is :-)

  • Where is the best place to buy united chemicon caps?

  • @TheMrgeekmania not united/nippon chemicon, but you can get rubycon and samxon from badcaps . net ;)

    other sources: digikey, farnell, mouser, rs-components

  • That's a pretty nice monitor for $35. I have a 6-year-old Dell widescreen with a bunch of inputs and a pivoting screen that I bought new and I wanted to hang onto for as long as possible. So, when it died last year, I also replaced the caps to bring it back to life.

  • about 3 or 4 months ago i found a cheap generic 20" widescreen lcd monitor for free on the side of the road with the exact same problem, bad capacitors in the power supply and luckily i just so happened to have all the capacitors i needed lying around on scraped circuit boards that came out of old junk i also got for free out of the trash so that was really lucky for me, a nice 20" widescreen monitor with a native resolution of 1440 x 900 for total investment of 0 dollars

  • I still use a Dell 15" LCD from 1997 -- one of the first "good" color LCD's.

    Back then it was the eye-catcher, now it scares people away :P

  • @sonic3243 One of my favorites to use is still an old 17" HP 1702. Old technology, but good quality. Good brightness and response time, despite lower contrast ratio. I wouldn't use it for photo editing or other critical stuff, but it's great for browsing the web and playing older games.

  • Wait just a minute young man, you lied to us! First you said you paid only $30 for this monitor and then later on in the video you said $35, and then BTW, you said your total was $37. So what is it $30 or $37??? What do you think we're stupid or something? You didn't get such a good deal after all did you? You probably paid $100 for this and you're ashamed to admit that to us. Does your wife know what you really paid? Who do you think you are Captain Kirk or something... jeez!

  • @ShitFromShinolla Well let's see, first I said "Around $30".

    Since I paid $25 for the monitor plus $10 shipping, I'd say that's $35. Add the $2 worth of parts I used, and it's $37. So when I said $30, it was a simple mistake. Maybe I should have said "Under $40"?

  • @Maxxarcade Well I don't know then. I still think that you think you're Captain Kirk who flies around the universe eating green ice cream from Star Base 12 in Sector 7 and you think that's all you need to do because you have no time on a work night to scrub your finger nails. They're dirty you know.

  • @ShitFromShinolla Obvious!, troll is Obvious!

  • @Aussie50 You talkin to me? I love you.

  • For the average consumer, repairing electronics isn't cost-effective. It's cheaper to throw the old equipment into the garbage bin and buy a new one. Nice job repairing the bad monitor. Not likely you could do the work, resell it and turn a profit though, right?

  • @PutSome5tankOnIt On this particular one, I could sell it for $100 or so. Older ones, not so much. The biggest advantage is saving myself some money when I need more equipment.

  • @PutSome5tankOnIt Thats a shame it is a throw away world, The technology is always changing, no one wants older types, they wan't the latest and greatest, Especially with 3D & HD

  • @HDXFH It is a shame. I personally don't like to spend money trying to keep up with technology; I'm always a step or two behind. I've bought and fixed two LCD tvs very cheaply, and I'll be working on a 3rd next week; the LCD tvs are only 3-5 years old. The pictures don't look quite as sharp as the newest tvs, but they're still very nice.

  • This is what i hate about modern electronics, they put the cheapest and crappiest components inside

  • arent just all your monitor;s bad?

  • I always worry when I see bad / burnt parts as to "what made them go bad" - is this less of a worry with capacitors?

  • @hammondeggs49 If they are a known defective brand, or are very old, it's usually safe to assume it's just the caps themselves.

  • so when monitors goes out, its mostly for bad caps?

  • @crusherbad64 A lot of the time, yes.

  • @crusherbad64 or if it's an Acer which is completely dead, the bridge rectifier may have gone shorted, blowing the fuse in the process. this odd problem is actually pretty common for Acer LCDs for some reason. but the caps should be replaced anyways ... i mean.. you're in there already.. so why not? :D

  • Great! Love it!!

  • Thats good you got the monitor working! Im currently looking for an old monitor with a resolution of 1440x900 so i can take the main boards out and connect them to a hp touchsmart iq772 screen, so i can have a fully working touchscreen, the motherboard in the iq772 drove the display and the motherboard is the dead bit.

  • Dude your the man for fixing that for the price I'm doing the same thing for my aunt business and thank you

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