Question about LG 42LB1DRA 42 in. LCD Television

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I have a LG 42LB1DR that is about 1.5 years old. It just happened last night. You turn the TV on and it stay on for about 2-3 minutes with picture and sound then it goes to a blue screen. Whats up with that?

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  • basebal084 Aug 07, 2008

    lg lcd tv turns the screen off itself

  • amethyst7076 Aug 17, 2008

    Not sure but mine started doing it today but it goes to a black screen.

  • mkcs Sep 03, 2008

    same problem - same time frame - except ours went out while viewing TV and never came back. Stranger still the controls went crazy. Chanel down button powered down the TV. Must be a controler / system board issue. Taking in tommorow to have it repaired or replaced.



  • Anonymous Sep 14, 2008

    Mine started a few days ago too. I will try to get it replaced with a Samsung.

  • Anonymous Sep 14, 2008

    Mine too! Happened Sept 11, 2008.

  • jcossentine Sep 14, 2008

    Mine too. Upon powerup the indicator flashes white for several seconds then the screen backlight comes on without any menu.

  • shannon0598 Sep 17, 2008

    the same thing happened to me a couple of days ago... If you guys figured something out you should let me know... I can't afford for someone to come out to fix it and tell me its spent... my email is shannon0598@hotmail.com



  • egreenwood Sep 18, 2008

    Turn on tv, power light blinks for a few seconds then nothing. The
    screen does power up but stays a grayish black. Occasionally pink
    stripes flash across the screen, but that is it. It sometimes turns on
    without any problem, but freezes and goes blank after a few seconds
    (20-30). Began having problems on 9-15-08

  • gozz Sep 18, 2008

    Mine did this tonight, while watching TV. Came back on again for awhile but then went black again.

  • Anonymous Sep 25, 2008

    I think we should all get together and plan a lawsuit... I talked to LG and they are rude they said even if the product was recalled they would not reinburse the money to me... I will not purchase anymore LG products. I will be calling the Better Business Bureau probably tomorrow. Let me know if anyone is interested...

  • LEAHANDSCOTT Oct 03, 2008

    SAME THING HERE, THE COST TO REPAIR IS OVER ONE THOUSAND. JUST WRONG, TV WAS JUST 17 MOUTHS OLD. I WILL NOT HAVE IT REPAIRED AND CALL LG TO SEE WHAT IF ANYTHING THEY SAY ABOUT THE TV GOING DOWN IN SUCH A WAY. I'F I DON'T GET ANY WERE WITH THEM I WILL NEVER BY A LG PRODUCT AGAIN AND BAD MOUTH THEM A EVERY CORNER I COME TO.

  • Christopher Modl Oct 18, 2008

    Mine just did this tonight. Powered down, and when I turn it back on, the screen is backlit, but black and wont respond. Talked to LG on the phone today about it, and they wanted to send out a technician, which I am sure wont be cheap. The TV is just about a year and a half old. Pretty weird how we all have the same problem at about the same at the same timeline of the TV. I think LG has some explaining to do!

  • harvbar69 Oct 23, 2008

    I talked to LG also and everyone of them are complete idiots. I have had my LG 42LB1DR for about 17 months and they told Me that they could not do anything because the T was out of warranty. They referred me to Diversified Electronics. I doubt the repair will be cheap. To me this sound like a manufacture problem. If you have noticed, they don't sell the TV anymore which tells me that there is a problem of some sort and they wanted to get it off the market before it blew up in their face. I bought it a few months after the TV was launched and now they won't do anything. This Sucks and they will hear from me again later today.

  • TNM1 Oct 26, 2008

    TV powers on. The Power light flashes once per second then the screen lights up. After about 30 seconds the TV shuts itself off. LG was no help.

  • Renahzor Oct 31, 2008

    Same issue here. Worked fine 6 hours ago, went to turn the TV on and nothing but a black backlit screen. TV is completely unresponsive to any input via remote or on-set buttons. Hopefully it wont cost half as much as the TV did brand new to have fixed. :/

  • Anonymous Nov 02, 2008

    sAME PROBLEM. POWERS JUST BLANK BLACK SCREEN, AND NO RESPONSE TO REMOTE OF BUTTONS

  • Anonymous Nov 02, 2008

    same problem after daylight savings switch

  • rrr2161 Dec 13, 2008

    I just had the same problem with my LG 42LB1DR television last week. I had it for just over 23 months. I called LG customer service and they had me unplug it and wait and the same thing happened. No picture, no sound, no menus. It also took a long time to power up (the power indicator flashed 13 times before it turned on to a blank screen. I brought it to a local tv repair shop and it costed $300 to repair it. The description on the work performed was "repaired main power supply". I just picked it up tonight and it appears to be working fine so far.

  • ahyatt19 Dec 13, 2008

    Same problem

  • Anonymous Dec 21, 2008

    Wow! I've pulled the power supply out of the tv. I've got bulging capacitors as well. You can see the oil sprayed on the back of the boards cover. I've got it down to three capacitors. Telling by the green coverings for the capacitors, they're manufactured by the same company. The power supply is a Yuyang Telecom type. LG must know that they have a problem with Yuyang power supplies and they're unwilling to help. I asked for a full repair and some supervisor from LG (obviously in India) told me they would cover the parts...lol $4.50 in parts, while I have to pay for the labor...probably $300. I will NEVER buy an LG tv again. LG you **** and I hate you!!! I will now have to pay someone to replace the bad capacitors...cause I don't want to do it. I hate soldering!!! Again, don't ever buy another LG product EVER.

  • dmature Dec 30, 2008

    LG refuses to back any of their products it up to the consumer to provide optional warranty ie spend more money or lose out after 13 months. I will never buy LG products after finding this out. LG is a low grade expendable product made to maybe last a year. Don't beleave me try it for yourself.

  • Anonymous Jan 24, 2009

    LGOwner123 can you post where you bought the caps and the sku numbers?

  • jsampo Jan 24, 2009

    LGOwner123 - do you mind posting the source where you ordered the caps and their sku numbers?

    Thanks

  • Anonymous Feb 19, 2009

    same

  • Chad O Feb 27, 2009

    My LG 42LB1DR TV started to turn on and stay on for 3 to 5 mins. I loose picture and audio and all function of remote. TV takes 10 to 15 secs to respond to power off. Now set wont even come on. Called LG they referred me to local tech company. I was advised by them it might be one of three boards and it will cost me $500 to fix if I bring it in and if that is the problem. The set was bought new in Jan 07. I love this TV but wow that's a lot of money. Weird thing is that the TV guide feature is not obtaining the information and is blank.

  • bdceron Mar 05, 2009

    I UNFORTUNATELY HAVE THE SAME TV,42 LB1DR AND WANT SOME INFO ON . THIS GOT TO THIS WEBSITE AND WAS AMAZED THAT SOME ONE HASN'T STARTED A CLASS ACTION LAW SUIT.

    I STARTED READING THE PROBLEMS .........

    I HAVE HAD THIS TV FOR 15 MONTHS AND IT'S BEEN ONE OF THE BEST I HAVE HAD .THE $ 2500.00 I PAID FOR THIS TV AND 3 OTHERS I BOUGHT FOR MY FAMILY.MINE IS THE FIRST TO GO OUT .

    I WILL BE CALLING CUSTOMER SERVICE IN A LITTLE WHILE,ARMED WITH ALL THIS INFO ,HOPEFULLY I CAN GET SOME RESULTS.....I WILL BE GETTING BACK TO THIS WEB SITE WITH MY RESULTS..IF THEY ARE NOT FAVORABLE I WILL BE LOOKING FOR A GOOD LAWYER.,BECAUSE I HAVE GIVEN $ 10,000.00 TO THIS COMPANY AND I WANT IT BACK IF THEY DON'T FIX THE PROBLEM..



    B.CERON

  • jjn0006 Mar 17, 2009

    Exact problem as others have listed and LG customer service gave the big out of warranty brush off. It does sound like an inexpensive fix but why am I responsible for inferior build quality. My Sony never did this nor did my lowly Magnavox LCD..I will never purchase another LG product and will voice my disdain for LG to all that care to listen. Definitely a detractor...

  • kandbyoung Mar 17, 2009

    I also have the same problem on a set that is 25 months old. I took it to an LG servise shop and was told that it would cost $750 to replace the main board. They couldn't even assure me that this would fix the problem. No help from LG service. I will never buy another LG.

  • golsen1976 Mar 21, 2009

    I have the same problem with my 23 month old LG 42LB1DR. Power is on and no picture. I can tell it is on and get a temporary picture then nothing. If the capacitor is bad on the power board, where do I get a new one to solder in?

  • bobbooth Mar 22, 2009

    LG TV 42LB1DR is backlit but screen is blank and unresponsive to all input from remote or on TV itself. Only power button has any effect on remote or TV body. Television was placed in service January 2007 therefore it is only 27 months old. Sounds like similar timeline to failure others are experiencing.

  • buffalowg747 Mar 24, 2009

    I have the same problem. One day the LG just turned itself off. Blue screen. When I turned it back on...it would stay on for about 10-15 minutes then itself back off. Luckly I had an extended warranty. When the Greek Squad came out...he said it was a bad power supply. One of those little transformer was bulging at the top. So they replace the whole board. If I did not have the warranty. The service call would be $150. The board $250. then to install $150 per hour. So about $600 to fixya. I will give you an update once it's fixed. I have to wait another 2 weeks for part and install.

  • Chad O Mar 27, 2009

    I took mine apart and saw the bulges on the top of the fuses. I put it together and about to take it to a fix-it shop. I am furious...I am about to call LG and work my way to the top. I am going to get a lawyer.. and I am not kidding if it does not go well. my email is chado1558@yahoo.com please let me know what you have done so I can join forces with you. Thanks.

    Chad O.

  • GARYJUNK1 Apr 28, 2009

    I had the exact same problem, same TV... LG 42LB1DR. TV just shut down one day after 27 months. Power stayed on and the LCD had power but no audio or video. It started with an error message in the upper left corner of the screen followed by shut down. This happened two more times after about 3 minutes of use each time. Then the error went away and the tv would shut down after only seconds of use. A magenta line would flash and a white line would flash and then nothing. I called LG and they told me to bring the tv to a local repair shop. They wanted $50 just to drop it off and $100 an hour to diagnose and repair. LG said they would give me the parts but since the TV was out of warranty, I would have to pay for labor. That’s mighty nice of them...... I went online and found this forum. I purchased four 2200uf @ 25v capacitor’s for $8 at that same repair shop. I upgraded to 25v because these will run cooler. The tv came with 10v Samxon caps that seem to be problematic in all the units they were used in. Do not buy Samxon if you do this yourself.... I opened the set by taking off the plastic back panel and then by removing the second metal panel. There are three boards and a hard drive. The board on the far left just above where the plug goes in is the power supply board. There are five data cables and one red power cable attached to it that can be removed simply by unplugging them. The board is fastened to the unit with five small screws, one on each corner and one in the middle of the right side. If you look for three green capacitors grouped together around the middle of the board and slightly off to the right, you will probably see one that is bulging out at the top. This is most likely "C235", the main problem. The other three caps that need replacing are C202, C201 and C219. C219 is closer to the top part of the board.....

    The process to replace is simple, believe it or not, and it could save you hundreds of dollars. 1, Go to RadioShack and buy a cheap soldering iron and a small roll of solder. 2, Buy four, 2200uf @ 25v capacitors, online or at an electronics store. 3, Plug the soldering iron in and let it heat up. 4, Locate C235 on the back side of the board and mark the negative terminal with a felt tip marker (you want to make sure that you put the negative terminal on the capacitor through the right hole, otherwise you will pop the cap. The negative terminal is clearly marker on all the capacitors). 5, With needle nose pliers, grip the cap and pull down while heating up the terminals. The cap will eventually come out. 6, Put the new cap in (you may need to heat the solder that is left on the board to clear the hole so it can push through). 6, When both terminals are through, bend them slightly so it stays in place. Take the solder and stretch out a few inches off the roll and while holding it in one hand, lightly touch the base of the terminal where it comes through the board, with the soldering iron and the solder at the same time. --- Try not to use too much solder.. you only need a tiny drop. This will solder the cap in place. 7, cut off the terminals close to the board with some snips and repeat this on the other three. 8, put the board back in, plug in the cables. Test the TV before putting the back panels on. It should work fine if all went well..... If you hear a pop than you reversed the terminals on a capacitor and that one will need to be redone correctly.... This might sound lengthy and potentially difficult but its worth a try. Otherwise you can pay someone to replace the entire board for BIG BUCKS with the same junk caps on it and have the same problem in a year or so. LG doesn’t want to take responsibility for this and I'm sure that it has cost a lot of people a lot of money for about $8 in parts........... This worked for me and it can work for anybody with the same problem.. Good Luck!



  • MACHO MONN May 11, 2009

    I HAVE THE SAME THING ON MY TV I THINK A LAWSUIT BECAUSE I AM SO MAD BUT WILL TRY FIXING IT MY SELF WITH ALL THIS GOOD ADVICE


  • amrikparmar May 16, 2009

    I have a RR 42PX11 LG Plasma TV in UK. The TV is about 3 yrs old. Since last week when the TV is turned on it has picture but the screen flashes for a few minutes then everything is normal. I am expecting it to get worse or turn into a problem everyone had had. Any suggestions or has anyone else got the same problem.

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I purchased four 2200uf @ 25v capacitor’s for $8 at a repair shop. I upgraded to 25v because these will run cooler. The tv came with 2200uf @ 10v Samxon caps that seem to be problematic in all the units they were used in. Do not buy Samxon if you do this job yourself.... I opened the set by taking off the plastic back panel and then by removing the second metal panel. There are three boards and a hard drive. The board on the far left just above where the plug goes in is the power supply board. There are five data cables and one red power cable attached to it that can be removed simply by unplugging them. The board is fastened to the unit with five small screws, one on each corner and one in the middle of the right side. If you look for three green capacitors grouped together around the middle of the board and slightly off to the right, you will probably see one that is bulging out at the top. This is most likely "C235", the main problem. The other three caps that need replacing are C202, C201 and C219. C219 is closer to the top part of the board.....
The process to replace is simple, believe it or not, and it could save you hundreds of dollars. 1, Go to RadioShack and buy a cheap soldering iron and a small roll of solder. 2, Buy four, 2200uf @ 25v capacitors, online or at an electronics store. 3, Plug the soldering iron in and let it heat up. 4, Locate C235 on the back side of the board and mark the negative terminal with a felt tip marker (you want to make sure that you put the negative terminal on the capacitor through the right hole, otherwise you will pop the cap. The negative terminal is clearly marker on all the capacitors). 5, With needle nose pliers, grip the cap and pull down while heating up the terminals. The cap will eventually come out. 6, Put the new cap in (you may need to heat the solder that is left on the board to clear the hole so it can push through). 6, When both terminals are through, bend them slightly so it stays in place. Take the solder and stretch out a few inches off the roll and while holding it in one hand, lightly touch the base of the terminal where it comes through the board, with the soldering iron and the solder at the same time. --- Try not to use too much solder.. you only need a tiny drop. This will solder the cap in place. 7, cut off the terminals close to the board with some snips and repeat this on the other three. 8, put the board back in, plug in the cables. Test the TV before putting the back panels on. It should work fine if all went well..... If you hear a pop than you reversed the terminals on a capacitor and that one will need to be redone correctly.... This might sound lengthy and potentially difficult but its worth a try. Otherwise you can pay someone to replace the entire board for BIG BUCKS with the same junk caps on it and have the same problem in a year or so. LG doesn’t want to take responsibility for this and I'm sure that it has cost a lot of people a lot of money for about $8 in parts........... This worked for me and it can work for anybody with the same problem.. Good Luck!

Posted on Apr 28, 2009

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  • GARYJUNK1 Apr 28, 2009

    There are three boards in the unit, a power supply board, a main board and a video board. If they tell you to replace the main board or the video board, this is not correct. The problem is with the Samxon capacitors on the power supply board. Dont pay to fix something that isn't broken.

  • GARYJUNK1 Apr 28, 2009

    There are three boards in the unit, a power supply board, a main board and a video board. If they tell you to replace the main board or the video board, this is not correct. The problem is with the Samxon capacitors on the power supply board. Dont pay to fix something that isn't broken.

  • Inept1 Sep 21, 2010

    Same problem.
    I followed GARYJUNK1's advice. Took the backs off, found the bad caps and then called around town to find 25v replacements. A one-man TV repair shop had them. I took the board in to him. He tested several circuits on the board and told me he'd sell me the 4 capacitors I wanted for $5, or install them for $25. I'm not good with soldering so I got a professional fix for $25 and a bit of personal labor.
    Works fine now.

  • caseybea Oct 05, 2010

    I have had the same problem for 3 years now with this set-- the symptom? The hard drive "needs initialization" - even though it's fine. OR, "hard drive not detected"... THREE times Best Buy has replaced the power supply board- and each time, I got 6 months to a year of additional life. (I figured as long as I paid for the warranty, let them fix it...). But now,with the warranty expired-- I found this forum! Just replaced C219 (bulging), and life is good. Pun intended. :-)

    NOTE: The power supply I have does already have 2200uf @25V caps for the other 3 locations, and those look fine. (note, this was a replacement power board, NOT the original). I assume that in later versions or updates for this power supply board- LG fixed most of the bad caps. I spent about 8 bucks, mail order, for a set of caps to keep just in case.

  • julior1 Feb 13, 2011

    Thank you GARYJUNK1 for sharing this. After six years, my tv finally went out, so I thought. After reading your advise, I removed the tv back and cap cover in less than 2 minutes and found the bad caps. It took longer to receive parts in mail then to diagnose and repair the problem. Since I was already inside the unit, it seemed appropriate to upgrade the hd from 160 to 1TB as well. All in all, four new caps (.65 ea), a new soldering iron ($45), 1Tb hd ($95), and two family ski vacations taken with the money I saved not buying a new tv.

  • speck255 Mar 26, 2011

    Garyjunk, You saved me $300 or more! The exact problem happened to my LG and I was a little skeptical that this would fix my problem, but $11 dollars later ((Including an $8 soldering Iron) and I was back up and watching my favorite shows. I only replaced the C235 capacitor, and I might add that the bulge on the Samxon 20V capacitor was barely noticeable, and only on the very top. We will see if I need to change the other capacitors at a later date, but the local electronics store only had 1 of the capacitors needed so I replaced the one that looked the worst (C235) and everything is back to normal. Even the light up display on the front near the power light now works when it didn't before. Some friends of mine have the exact same LG model and said they paid over $300 about 2 years ago for the same fix at a local TV repair shop. Thanks again Garyjunk for helping so many out with this simple but effective fix.

  • Mother of Three Nov 24, 2011

    I want to thank Gary Junk for your advise. I recently repaired my LG television by myself and only spent 60 dollars for just the capacitors and soldering iron. You saved me alot of money and time. My television has been working great ever since Thank You again.

    Mother of three

  • Jordan Bowman
    Jordan Bowman Jul 27, 2012

    Best advice possible. I followed this to a tee and got a free 42" t.v. from work. 4 I called around town as well for some 25v 2200mv caps and nobody had them. Finally tried an electronics engineering firm and they gave me the caps for free. I litterally paid five dollars in gas for this t.v. and I wouldn't have known to change the caps without reading this post. You are a god send.

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I purchased my set about 2 years ago. I experienced the same problems as other owners where the TV would not turn-on or will turn-on but become non-responsive or turn-off on its own after a few minutes. Some other owners have posted comments that the problem is faulty capacitors on the power supply board. I removed the power supply board and noticed that one of the capacitors had a bulge on the top of the cap. The capacitor is green and made by Samxon. The capacitor is rated as 2200uf 10volt. I made some research online regarding this specific capacitor. Apparently, this is a defective capacitor as other people have posted comments online on various other products that use this capacitor as also failing on their products. The power supply board has a total of 4 of these capacitors. I ended up removing all 4 which was really easy to do since they are not small and good size to handle. I was able to locate the a different brand of capacitors online for $2.50 and soldered them to the board. Since I had the TV taken apart, I also upgraded the hard drive with a 500gb Seagate DB35.3 which are hard drives made specifically for DVR's. The TV originally came with DB35.2 which was the previous model. After I was all done with the repair and upgrade, I turned on the TV and it has been working flawlessly. This confirms to me that the problem is caused by the faulty Samxon capacitors used on the power supply board. If you do not want to mess with soldering your board, there are retailers selling replacement boards for around $150-$180 however if you get a new board that has the same Samxon capacitors, I would assume that over time, the same problem will happen with the capacitors failing. As for the hard drive upgrade, the TV accepted the drive with no problem. I can now record 52 hours of HD and 127 hours of SD. Please let me know if you have any questions.

Posted on Jan 07, 2009

  • Becky Wilson
    Becky Wilson Dec 31, 2013

    ok guys found the blown caps but just a little concerned about the negative positive thing. Where is it clearly marked? I think I know but want to be sure. This model was manufactured in 2006 we bought it in 2007 for way too much. Fist the DVR quit working right and this is the second time now apparently with the bad capacitors. Oh well, hope I can get er fixed. thanks alot

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Same problem with my LG. No menus, no picture, just black backlit screen. Took back cover of and sure enough, one of the samxon 2200 10v caps was blown. Ordered replacements from opamp-electronics.com two months ago, NEVER GOT THEM. Sent numerous messages to them with no response, so I filed a complaint with the BBB about a month ago, they havent been able to get a response. About 2 weeks ago, 6 weeks from my original order, I ordered caps from newark.com. I payed 5 dollars for 8 caps(only needed 4, but wanted extras just in case) and 2.50 for ups ground. Within 12 hours the caps were in ups hands and they upgraded my shipping to 2nd day air for free. I will be purchasing all my electronic components fron newark.com in the future. I used a standard hobby soldering gun to remove the 4 samxon caps and replaced them with the new ones, the whole procedure took maybe 5 minutes. Assembled the tv again and it fired right up. THIS IS AN EZ FIX, DO NOT GET SCAMMED BY A TV REPAIR SHOP!

Posted on Jun 20, 2009

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Ok...here is an update on my TV repair. The board arrived with another bad capicator...but he was still able to fix it. Here is what you need to do to fix your TV. Unplug the back of your set and lay the TV face down. Open the back...there are a lot of screws. Remove the black back and the silver cover. Look at the capicators on the board...are any slightly blugging at the top? If one is...herein lies your problem. The capictors are all numbered. The ones most likely to go bad are C202, C201, C218 and my repair guy says...the most common one to go bad is **C235**. If you are good at saudering you can buy are replace the capicator. Most important...when puchasing a capicator here is you what you need 2200@10 Volts it must be 105 degrees C.
I hope this helps...I asked the tech every step to share with you. He suggested you could also take the board to any shop and have them sauder them on for you for a lot less money!!!! Let me know how it goes.

In case you don't know what a capicator looks like go to this link to view. This link will not tell you how to fix your TV...it is just so that you can see what one looks like. http://www.dalantech.com/fusionbb/showtopic.php?tid/83090/pid/92207/post/last/m/1/

Posted on Apr 07, 2009

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I just got of the phone with a manager at LG and they want to send out a technician to figure out the problem. I made it more than clear that their are more than just a handful of us experiencing this problem, and they are "looking into it".

I think we all need to call in and complain, and drive the fact home that this is not a single incident, but that there are many of us having this problem. Point them to this forum, and tell them your faith in LG is waning. A threat of informing the Better Business Bureau never hurt either. That's what I did, and now they are looking into it more, and are going to cover the parts on the service call, so that my expense for their problem is covered, even though my warranty is expired.

If we want this fixed, and prevented in the future, we have to call and bitch, that is the bottom line. It is unfortunate, but that is how it has to work sometimes.

Here is the number for their customer service: 800-243-0000

If you hear anything new, let us know!

christophermodl@gmail.com

Posted on Oct 18, 2008

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I also had the screen on and off problem, but I tried fixing it myself after reading GARYJUNK1's piece. It worked! It took some time to do all the solder work, but I'm watching the TV work without any problems. Saved me a couple hundred dollars.

I replaced the 4 that he mentioned, but in addition to the 4 bulging capacitors, another one (218) seemed to be on the brink. I left it alone because I didn't have a replacement for that, but the TV seems to be working fine for the moment. Hope it's not important...

Thanks for your help!

Posted on Mar 27, 2010

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LGOwner, MachoMonn....Thanks. I changed the capacitors per your instructions. Works perfectly. As with everyone else...2 years + / -...then poof. Nothing.

My total cost to fix was $25...Capacitors were 10 and soldering kit was 15 (including solder cost)...you guys are the bomb!

Posted on Jul 02, 2009

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I followed the directions ans replaced the capacitors. I was nervous the whole time because I have never done anything like this. I'm pretty inept when it comes to electronics so if I can do it anyone can. The tv works fine. The parts cost me $5. Thank you guys!!

Posted on Jun 23, 2009

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I just did GaryJunk1's fix. It took me all of an hour to do and the tv works great! I saved $600 bucks. I spent 5.40 on caps from DigiKey and 12.40 for shipping. 20 bucks and a little time is SO worth it. Thanks for your help! I would recommend it to anyone with this issue.

B

Posted on Jun 04, 2009

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As LGOwner123 posted the 2200uf 10volt capacitors were the problem with my set as well. changed out all 4. under 5 dollars for parts 10 for shipping 15 dollars later set was back up and running great. thanks LGOwner123!!

Posted on Jan 21, 2009

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I had the same problem. I took off the back and the metal plated covering the 3 boards. Removed the power supply board. Replaced the 4 capacitors C201, C202, C219 & C235 (the one at fault) with 2200uF 25V rated for 105C. It's now working fine. Cost me $5.45 for the 4 caps plus $7 shipping cost to get the caps..

Posted on Sep 15, 2009

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Not really a solution, but ill post it here anyhow. LG Tech support basically threw up their hands and said find someone to fix it, not gonna cover it, but we'll give you the number of someone you can pay to have it done. Its pretty obvious theres a bigger problem here if there are so many of the same model number sets going bad. We'll see how much its going to cost but i have a feeling its going to be well more than its worth to fix the set, considering there are similarly sized sets selling for $800-900. My unit is 9 months out of warranty, i guess LG figures 20 months is plenty long enough for their TVs to last. I will definitely be avoiding all LG products going forward, and i take some satisfaction in the fact my parents are purchasing an HDTV this weekend, I have a feeling they'll be buying the Samsung instead of the LG they saw in the store.

Posted on Nov 01, 2008

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I ordered the caps from www.opamp-electronics.com 

Posted on Feb 02, 2009

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I just spoke with LG. Not overly helpful. He suggested unplugging the TV, waiting 10-15 minutes and then plugging it back in again. This apparently resets the TV. If that doesn't work a service call is required. Worth a try. He also said there is no recall in the system.

Posted on Sep 18, 2008

  • gozz Sep 25, 2008

    I took my tv in and they replaced the main board - a $600 fix. Thankfully its still on warranty. I took it home and it worked for 5 minutes then went black again. It goes in again this weekend for attempt #2. Will let you know what they change this time and if it works.

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Another successful fix here using the method provided by GARYJUNK1. The LG 42LB1DR was doing the exact same thing as mentioned by other users. When I opened it up I found that only the C235 capacitor was actually showing signs of an issue, though it was barely noticeable. I went ahead and replaced C235, C202, C201 and C219, with 2200uf @ 25v ordered off of Digikey.com. Total cost was for the caps was about $7. Once re-installed the TV now works like brand new. This TV was about 7 years old. It bothers me that LG used bad caps and most people wouldn't even know where to start so they probably just toss it even though its such an easy fix.

I am very thankful for those that posted this solution, especially GARYJUNK1 - Thanks!

Posted on Jan 15, 2013

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I had the similar issue, replaced the capacitor and works perfectly, thanks for the great tip.

Posted on May 29, 2011

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I also want to thank Gary Junk for his solution. I have never done anything like this. I worried the whole time, but once I got the first capacitor, I knew I could do the rest. I did everything for $20, after my wife had already called the Geek Squad to come out for $150 (show-up fee), plus $300 for the board, and $35 for every 15 minutes of labor. Thank you again to all the folks on here who made me realize I could do this. BTW, my TV was approximately 4 years old when I started seeing the same problems described here. Thank you!!!

Posted on Feb 06, 2011

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I JUST FIXED MY TV USING GARYJUNK1'S POST HE HAS EXPLAINED THIS IN FULL DETAIL AND IT WORKED TRUST ME IF YOU CAN DO IT YOURSELF I BOUGHT 10 CAPACITERS FOR $9.99 ON EBAY SO BEING THE TV WAS GIVIN TO ME CAUSE IT DIDNT WORK I JUST PAYED 9.99 FOR A LG 42" TV THANKS GARY

Posted on Jan 23, 2011

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I think we should petition LG and get some compensation. I have a 42LB1DR That a year ago had a new pwr supply installed for $300. Here a year later I am having the same problem and have read the suggestions here and found the same problem. I can now save a lot of money and fix it myself. Sounds like this model is a real lemon and LG should be accountable for the fix. If any one has any suggestions about doing this, my email is mls2009@tularosa.net. Thanks for the help guys.

Posted on Nov 03, 2010

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Have a LG 42LB1DR for a little over 3 yrs. Screen went blank with back lighting on, with no audio/video. Found the solutions listed here and went to change the 4 caps mentioned throughout these solutions. Top of C235 was bulging a bit and nothing obvious on 3 others. Didn't work and was disappointed. Decided to change another 2 other 2200uf @ 10V caps not expecting much. Was surprised that it finally got the set back in working conditioning. Decided to upgrade the hard drive while the back cover was off.

Posted on Jul 21, 2010

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Add another person to the list. Same problem, fixed it with 4 new capacitors and it works great. I also upgraded the hard drive to a DB35.3 (750GB!!) and now have 193 hours of standard definition recording. Thank you GARYJUNK1 and MACHOMAN!! All of the people that have gone before me and spent time typing in this solution have earned my utmost gratitude!! THANK YOU!!!

Posted on Jun 08, 2010

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See Macho Man's fix. I followed his instructions and my tv is working perfectly. This is the best tech fix on the internet that I have seen. Thanl you Macho Man!!! You are awsome!!!

Posted on Feb 15, 2010

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Had the same problem last week with my 47in LG. Bought the 4 capacitors, and although they were in different locations on the board there were still 4 of them. Took the old ones out and replaced them with the 2200 25v capacitors. After a few tries and too much solder, got it working perfectly. Just wanted to say thanks guys, now my kids will get more presents this Christmas

Posted on Nov 24, 2009

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Well i just got mine fixed it was real simple repair man (that LG recommended) came in took about an hour and he knew the exact problem.  It turns out that it is the power board and that had to be replaced.  Just a cheap manufacture by LG and my friend that sells tvs, says he has a lot of problems with the LG brand of tv.  Probably to late for most of us on here but for now mine is fixed and am happy once again.

Posted on Oct 30, 2008

Hello all. LG is fixed. The problem was a bad capacitor in the power supply. A $70.00 fix. Hope this helps.

Posted on Oct 29, 2008

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Hello LGOwner123,
This is not a solution, but I post this to ask LGowner123 question related to hard drive replacment.
LGOwner123, did you do anything on hard drive replacement for LG unit? Did you backup any image or just swapout old one and replace the new one.
Also will 750GB or 1TB work for replacement.

Posted on Apr 07, 2009

  • Electronics1 Apr 07, 2009

    Is it the Model: ST3500830ACE for hard drive replacement?

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I know the other day I said that they were no help at all, but I bothered LG for several days and they finally told me that they were going to cover the entire repair. I mentioned how there were thousands of website with people having this exact same problem with the exact same TV. My TV was ten months out of waranty but they still covered the repair. Just let them think you have purchased LG products for a vry long time and you don't want to discourage anyone from buying their products becuase you have had such good luck with their products. The lady I spoke to undrstood my frustration and went and spoke to her supervisor and the problem was solved in about 1 hour. I don't know about you but that is a heck of alot furthere then I was when I first called them. If thisdoes not work the Classaction Lawsuit and the BBB is a very nice touch.

Posted on Oct 29, 2008

  • harvbar69 Nov 14, 2008

    The same thing fixed my TV. A bad capacitor on the Power Supply was the problem. The only way we found it was on the back of the TV when you take the plastic casing off the was oil from the capacitor on the aluminum casing. You can see the bad one by looking for the bulge on the cap of the capacitor. Pop it off and solder a new one in and you are good to go.

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I have the same problem just 17 months after the purchase. My repair guy tells me main board for $450 and $300 for labor. Any advise is helpful.
Thanks,
Sunny

Posted on Oct 29, 2008

I have had the motherboard replaced on warranty and it did not help. The technician said he thinks it is the Power suppy circuit board that has failed. It is on order and I will find out this Friday. I'll let you guys know.

Posted on Sep 25, 2008

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The problem is the plug into the tv, the input from where the cord connects. I think its called the Noise Filter. I took all of the covers off of the back of the tv. Since I am out of the warranty and LG will not fix the problem I decided to fix it myself.

I ordered the entire powerboard online for roughly two hundred canadian dollars, I heard from this site and a few others that a few capacitors were the problem, but after replacing the board we still had the same problem. The screen was black and we had seen pink stripes every few seconds or when trying to change the channel.

When turning on the tv throughout this problem, a noise was coming directly from the cord plug in at the back of the tv, that box connects into the Power board as well, we thought that the cord might be the problem, but it connects into a noise filter box which we had taken out of its base.

We had then plugged in the cord in but we kinda played around twisting the cords connected to the box and then tried the tv again. It works, it must be a faulty plug in or something, but we're going to just use some twist ties to ensure its connected pretty tight.


Hopefully you can fix your tv as well.

Posted on Nov 08, 2008

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