Question about LG 42LB1DRA 42 in. LCD Television
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
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
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
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
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!
Posted on Oct 18, 2008
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
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
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
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.
Posted on Jun 04, 2009
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
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
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
I ordered the caps from www.opamp-electronics.com
Posted on Feb 02, 2009
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
I had the similar issue, replaced the capacitor and works perfectly, thanks for the great tip.
Posted on May 29, 2011
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
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
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 email@example.com. Thanks for the help guys.
Posted on Nov 03, 2010
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
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
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
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
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
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
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
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.
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
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
A 6ya expert can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017
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