LG LCD TV 42DL550 Fix

Zedic

How to repair an LG LCD TV main board.

 

This is a simple method to fix a TV or other electronic device with bad solder connections.  The TV I fixed is an LG 42″ LCD TV Model 42LD550-UB.CUSWLHO.

Symptoms

The TV would power on and the LG Logo screen with the clock would appear.  It would freeze on the logo screen.  It was stuck there and would not boot any further.  The none of the buttons would work.  It was totally stuck.

First I tried unplugging it for about 15 min to reset everything, but that did not make a difference.  Note:  It’s always good to try this first on any electronic device.  Also if the device has any kind of factory reset button, always try that as well before taking it apart.

I searched around online and found other people reporting issues with this TV.  HDMI ports not working, no inputs working, Lines on the screen, fuzzy video, etc…  It seems many different makes and models are affected.

I removed the board and I did not see any physical damage, no components looked fried or burnt, no capacitors looked bad, and all the connectors looked to good.  This lead me to believe the main control board Model EBT60955753 LG MAIN (3642-1052-0150) could have one or more bad solder joints.

This TVs was purchased in 2010 and out of warranty.  A new board was hard to find, and too expensive.  I decided to try this simple repair myself because I had nothing to lose!

Summary

To fix it, I baked the main board in a electric oven for about 10 minutes at around 385 °F and It worked!

Explanation

Why did this work? After heating and cooling for years, tiny cracks can form in the solder connections.  Heating the board to 385° F (above the solder melting point) caused the solder to melt and these cracks flow back together.

Believe it or not, this trick works on more than just this TV.  This can fix a long list of other electronics.  It’s not uncommon for manufactures to under cool their components, and/or ship electronics with bad solder.  Poor ventilation, bad fans, small heat sinks, dust, stress, and other factors can also cause over heating or cracked solder points.  Even a very tiny crack that you can not see can cause a bad connection.

Warning:  Attempt at your own risk!  Safety First! Always wear protective gear when working on electronics.  Safety Glasses, Gloves, etc…  Remove Electricity from the device (unplug) to Avoid Shock!

 

Again, attempt at your own risk!  This will void your warranty, and possibly damage the board.  I have only tested this on an LG 42DL550!  Other readers have had success on different models so search through the comments.  I would only try this if the TV is unusable and you have nothing to lose!

Let’s Do This!  Step-By-Step DIY Fix:

 

– Remove the board from the TV

LG MainBoard EBT60955753 (3642-1052-0150)

LG LED TV Control Board EBT60955753 (3642-1052-0150)

  • Step 1.  Call LG and complain.  Everyone complaining to LG might make them understand how unhappy people are, and they’ll see this is a known issue!  Maybe if you play your card right, they will admit this is a fault with their product and send you a replacement.
  • Step 2.  UNPLUG THE TV before you touch it!  Electric shock can cause death!
  • Lay the TV down on its face. (Put it on a blanket to be careful not to scratch the LCD)
  • Remove the stand from the TV. (remove the four long screws at bottom and the stand slides out)
  • Remove the back cover from the TV.  (don’t forget the screw near the power plug, and the one in the middle of the input jacks.)
  • Take pictures of the Board from all angles.  Make sure to get good ones of all the connections.  You can use these pictures later to make sure you reinstall it correctly.
  • Remove all the connections. (Be gentle, they should come off easy, if you are doing it correctly)
    • How to disconnect them isn’t obvious to the inexperienced.  Use the picture above for reference. (Click on the picture to enlarge it!)
    • On the upper right there are two ribbon cables. To disconnect these, gently lift the thin black plastic strip on the connector (it flips up), then you can pull the ribbon cables out.
    • On the lower right there’s a wide header block with gray wires. Squeeze the sides (opposite ends) of the connector to release it and pull up.
    • On the upper left are two other connectors. In the center of these is a small plastic part. Press down gently on the edge of that (the edge near the wires), causing the opposite edge to lift a bit to unlatch. While pressing, pull gently in the direction of the wires, away from the board.
  • Once all the wires are disconnected remove the six (6) screws holding the main board to the frame.
  • Remove the black plastic face plate from the side input jacks. (No screws, it’s held on by it’s plastic clips).

– Bake The Board

  • Now we are going to bake it in a conventional electric oven.  (Do NOT use a microwave, gas oven, open flames, Air Forced Heat, or any other type of heat!)
  • Why not use a heat gun?  A heat gun is forced air like a hair dryer.  As soon as the solder melts, the air will blow the components out of place, or even go flying off the board.
  • Why not use a gas oven?  Open flames can be dangerous in this situation.
  • Why not use a microwave?  Never put metal in a microwave!  Very bad things can happen.
  • Preheat the oven to 385 °F (196 °C)
    • The correct Temperature is IMPORTANT.  If you don’t trust the temperature setting on your oven, or if your oven does not have a temperature setting, then get a baking thermometer and test your oven!
    • 385 °F is working for most people, but there are different kinds of solder.  Altitude and humidity might also play a factor.  Most solder melts between 360 and 419 Degrees Fahrenheit or 180 – 215 Degrees Celsius.
    • Solder is a mixture of Tin and Lead.
      50 Tin/50 Lead: melts between 183–215 °C (361–419 °F)
      60 Tin/40 Lead: melts between 183–190 °C (361–374 °F)
    • NOTE:  These temperatures might sound scary, but the ignition temperature of paper is around 451 °F so these components should not be damaged at these temps in an electric oven.  Again, this is why we only us an electric oven.  No open flames!
    • See https://en.wikipedia.org/?title=Solder for more details about Solder.
  • Place the board face up on something nonmetallic like a piece of cardboard.  A pizza round or similar works well. (Do not put it on anything metal because the solder will stick to it.)
  • Place it on the center rack of the oven.
  • It will smell funky when cooking so you might want to open a window and/or turn on a fan!
  • Let it cook for about 10 min.
  • Turn the oven off and let it cool.  (Be careful!  It’s hot and will burn you!  Use oven mitts!)
    • Do not to bump or disturb it while it is cooling!
    • I would not move it until its below 300 °F, so you don’t disturb any components!
    • Just turn the oven off and leave the board in it with the door open until it’s cooled off a bit.
    • If you take it out of the oven while it is still hot, remove the board very carefully, let it cool at least 30 min before you touch it.

– Install and Test

  • Install the main board in the reverse order that you removed it. (Refer to your pictures)
    • Make sure you get all the cables in the correct location.
    • Double check each cable to make sure it’s connected correctly.
    • Check your pictures to make sure you have everything correct.
    • You might want to leave the back off until you test it in case it doesn’t work, and you need to bake it again. Just do NOT touch anything back there with it plugged in!  BE SAFE!
  • Turn on the TV and see if it works.  (Note:  Wait at least 10 Seconds after turning it on because it seems to take a long time for this particular TV come on.)
  • If it does not work:
    • Try cooking it again for 15 min.
    • 10 min. worked for me on the first try but results my vary…
    • Try a higher temperature 183 – 215 °C (361 – 419 °F) as noted above.
    • One reader noted he went all the way up to 482 °F (250 °C ) although I highly recommend staying below 425 °F.  I’m guessing his oven settings are off.
    • Another reader said he put a weight on the LVDS chip while baking and that worked.
    • Read through the comments, there’s a lot of good info in there.

Please comment to let everyone know how it went for you!  Include the Make and Model of your TV / electronic device to help others can find this post!

Warning:  Attempt at your own risk!  Safety First! Always wear protective gear when working on electronics.  Safety Glasses, Gloves, etc…  Remove Electricity from the device (unplug) to Avoid Shock!

 

Again, attempt at your own risk!  This will void your warranty, and possibly damage the board.  I have only tested this on an LG 42DL550!  Other readers have had success on different models so search through the comments.  I would only try this if the TV is unusable and you have nothing to lose!

 

Keywords:  Samsung, Sony, Vizio, Sharp, Sony, Insigina, Toshiba, JVC, Philips, Magnavox, Sanyo,  Fix, Electronics Repair, Motherboard, Mainboard, ControlBoard, CPU, ReSolder,

481 thoughts on “LG LCD TV 42DL550 Fix”

  1. Thanks so much for this post.
    Your solution did indeed work for me on the first try.
    I had identical problem on 32 inch model that was also four years old.
    You saved me from throwing out an otherwise good television.
    Just wanted to take the time to say thanks.

    2. Thanks for the GREAT info on how to repair the board. I have a 42LD550. Did what you said and it worked like a charm.
      You saved me a bunch of money. Thanks again.

  2. The HDMI inputs stopped working on my 2010 tv. I googled the issue and many sites said it was a bad main board, buy a replacement for around $300, or better yet, at that price just buy a new tv.
    Then I stumbled across this solution, and decided to try it. I thought my tv was going to be fried, but at that point, what did I have to lose? Well – it worked. So thank you so much!
    FYI – I created a profile on here just to add this comment.

    1. You’re welcome! I’m happy to have helped save another TV from the dumpster. I can’t guarantee how long the fix will last, but it’s better than throwing it out.

  6. I have a 55″ LG TV and the “no connection” video problem has slowly made its way through all my HDMI ports. Originally 2 went out at once, but the third worked for about a year. Now all 3 are busted. I tried the baking method above completely, 385 including doing it twice (10 minutes, cooled, tried it didn’t work … then did the 15 minutes about 8 hours later after I got off work), to no avail. Still no video signal. Any other ideas to try, since it seems it is in the connections, or do you think at this point I’m hosed and should either pay for an LG tech visit (they told me essentially “good luck, no help from us”), or start saving for a new TV? I have an older 42″ LG that still works and I’m using as a backup for now.

    1. Becky, sorry to see cooking it didn’t work for you… 🙁 The target of this fix is the CPU or GPU. The symptoms are typically; the TV locks up during use, wont boot at all, or has intermittent issues only when cold or hot.

      I’m not sure what is causing your HDMI issue, but it could be bad solder joints. This is typically an easy fix, if you or someone you know is handy with a soldering iron. Another common problem with older electronics is capacitors. They tend to dry out or leak over time. These are also not bad to replace if you can solder. Just do a physical a inspection of the HDMI ports and see if there are any cracks anywhere. Also inspect the capacitors for any bulging, or leakage. Soldering is not really that hard. If you find something you need to solder, then learn to solder… Google, and Youtube are your friend!

      I would also not pay an LG tech. I’m pretty sure all an LG tech is going to do is replace the entire mother board. You’re obviously handy enough to remove and install the board yourself, so you could just buy a new board on ebay, or wherever (do some searching for the best price). Then just compare the cost of a new TV to the cost of the part. You’ll still have an older used TV, but if the part is cheap enough it would be worth it.

      In any case, I wouldn’t throw the TV out… Typically most devices have more than one type of output and input. You could switch to Composite, Component or Coax video output/inputs. The quality might not be as good, but you won’t notice on many things. Even if it’s not your main TV, it would make a good second TV for your Wii or some other device that uses RCA connections.

      Good Luck!

  7. I’ve got somewhat of the same problem, my 55″ LG worked this morning and then I just turned it on and “no connection”. My tv in the other room works and I reset my directtv box and even tried the composit input. My PlayStation, on my hdmi2, does not show up eithe
    However, my WiFi works fine, so it seems that all 3 of my hdmi ports and my composite all went out. Could this also be the main board with my WiFi still working

    1. It’s possible bad solder could be causing our issue so it might be worth a try if you have nothing else to lose. There are no guarantees but it seems to be working of a lot of people. You might get lucky.

  8. Great advice. I really appreciated finding this post and experiencing success with the technique. Thank you for sharing the info. My HDMI ports are back up and running.
    Cheers!

      1. Hey Zedic!

        Thank you so much for your great instructions! Bow & applauses from Finland!
        Fixed my LG 42LX650N tv, which had HDMI problem! 200 celcius for 10 minutes.
        I bought it in 2011, and couple days ago HDMI´s sayd no signal.
        I called to LG, and asked how much it would cost to fix it, guy said: ~440 Euros!!!
        I said, i might just buy a new tv then, he went mute.
        Luckily i found your instructions, you saved me a cost of new tv, so thanks again!
        It´s interesting, that almost all tv´s here are about 4-5 years old.
        Feels like Planned Obsolescence… Those moneyhungry motherf**kers!!!
        There´s a documentary film about that subject: Underhand Tactics: Planned Obsolescence
        Here is a link, where you can watch it for free:
        http://topdocumentaryfilms.com/light-bulb-conspiracy/

        May the force be with you! 😉

  9. Unfortunately the baking method did not work for us. 🙁 Our HDMI ports went out about a year ago, I called a local TV repair shop and was told it would be around $350 to repair the problem. Instead we started using the component ports to run our cable box and bluray player. We wanted to get Apple TV so I started looking for other less costly solutions to our HDMI port problem and came across this site. Our problem is slightly different from others. If you use any of the three HDMI ports you will get a black screen, but there isn’t any kind of “no connection” message so in a way there must be some sort of connection. If the cable box is hooked up through an HDMI port and you change the channel the screen will remain black but sound will come through. After trying the baking method the connection of the HDMI 3 port would get a second of picture and sound before going out but no amount of wiggling or carefully pulling on the cord would get a continuous feed. I thought a second go through the oven might fix the problem for good, but we got the same results after trying the 15 minute cooking. I do have one piece of good news. We seriously debated even trying the baking method because everything else works on the TV works perfectly fine and we thought trying the baking method would totally ruin an otherwise good TV. I’m happy to report that out TV still works so I would like to inform everyone that it’s at least worth a try. Sorry for the super long post but if anyone has an alternate solution to try please let me know. Thanks!

    1. Awesome! It seems this is working for some and not for others. It might be helpful for everyone to put the make and model of the TV this fix worked on to help others find this post.

  14. Hi

    Thanks so much. I have a 47″ LG that I bought in 2011. The other day the same thing happened to me. Luckily I found your site.

    Followed the directions and it worked! Wow I am so grateful that I don’t have to buy a new tv.

    Thanks for your help!

  15. Your advice is good. I’m in Romania and I have an LG 42LE5500 made in 2011. A few days ago the HDMI port on the side stopped working. I tried the HDMI ports on the back, also not working. I was angry at LG.
    I found your post, but it seemed too risky to bake the board. But after a while I changed my mind and today I tested your solution. I followed your steps, except the one with the plastic plate on the side, on my TV is made of metal. I put the board in the oven for 10 minutes, let it cool for 35 minutes and screwed it back in the TV. The test was successful, all the HDMI ports work now.
    Thank you for this solution! I hope it lasts and isn’t just temporary.
    The conclusion is that baking the board worked in this case on my LG 42LE5500.

  16. Hello, my friend.

    I’m sorry to bother you with some specifics. I don’t know where else to go for help. MY 5 years old LG TV (model 42LH50YD) stopped working today. It turns on ok. It detects which HDMI ports have devices attached to them, but gets no signal from them. Is not a cable or device problem: already tested on another TV, everything is working fine. In this case, do you think the motherboard “baking” could solve the problem?

    Thank you for your post.

    1. This is the same problem that I had with my LG 42LE5500. The TV was working, a could see the cable channels fine. The TV detected the HDMI ports that had devices attached, but when I selected one of these ports, it showed me the “no signal” message.
      Now, 44 hours after baking the board, the HDMI ports are still working.
      Baking the board sounds weird, but the risk is not that high if you think about it. I baked it with the oven set at 200 degrees Celsius. The paper burns at 232 degrees Celsius, so this temperature is not so high to melt the board. The port where I insert the cable from the cable company had a plastic label on it. This label melt just a little, on the sides. One should be careful not to damage the board on the way from the TV to the oven and back. And especially when taking the board out of the oven.
      My only regret is that I didn’t order pizza, I used the lid from a shoebox to put under the board in the oven. I chose a lid made only of carton, with no plastic in it. I think the pizza carton is better suited for this endeavour.

  19. I was very sceptical when I first read this blog, but the further I read the more I thought “I can do this!!!!!!” Well it worked and I am stunned……and also very greatful. Cheers for the heads up. I was having a problem with my HDMI ports like others have explained, did some baking and BAM! it worked. Like I said, can’t believe it, but very thankful for the advice.

  20. Hello.
    Just fantastic.
    I live in Toronto.
    TV LG 47LE5400 5 years old.
    Last week I lost video from all HDMI ports.
    LG service 75$+ tax. none refundable for tech. visit your home.
    Optional to bring TV for repair to the place then 40$ for estimation
    and they going to be refunded (deducted from total price) if you agree
    to repair TV with them.
    Flat repair rate 150$ plus price of
    LG 47LE5400 MAIN BOARD EAX61532703 / EBU60884304
    At TVparts.ca I found it for 140$.
    So 400-500 with taxes included to repair TV at home and 140 less if you bring TV.
    Feel very upset. Start digging WEB and found this recommendation.
    At the beginning I though the author is some kind of lost…
    Then I reed explanation behind the idea of making a pizza from motherboard and being a technical guy myself decided to give it a try as it make a perfect sense.
    I spend a couple of hours for all process doing it very slowly and carefully.
    180 Celsius 10 minutes in preheated oven then cool it 30 Min and bingo!!!
    Thanks a lot!!!

    1. Thank for the comment Roman! Especially the “At the beginning I though the author is some kind of lost…” part. That is hilarious! I wonder how many other people start out thinking I’m crazy… 🙂

  21. My 55LX6500 55″ lost all HDMI ports and all the other ports also. I was going to replace the board, but not only are they high. Nobody had one. I came across this page and thought why not. It is like the method used to fix the yellow light of death on PS3’s. So far so good. It is working now. Thanks.

    1. Glad it worked for you. Yup, there is a long list of electronics that are susceptible to bad solder joints. Especially things that get hot. Motherboards, Video Cards, Laptops, GPUs, CPUs, Power circuts, and Sound devices can create a lot of heat. Besides heat, physical stress, and old age can also break connections. If the problem with the thing is bad solder, then with a little luck, re-flowing the solder can be an easy fix. There are also lots of ways to do this. Heat gun, Hair Dryer, Torch, etc. In this case, cooking it in the oven was the simple way to go.

      The two most common things I run into are bad connections, and bad capacitors. Both can be caused by heat, and old age…

  23. Came here after googling “hdmi lg issue”
    I’m surprised so many have the same problem and with the same brand and model.
    Hope it will work for me. Will try on weekend
    Just solder is melting at 250C. Maybe its humidity issue?

    Thanks!
    Oded

    1. Well, you’ve got another happy “customer” . HDMI is back. I can see the android box again.
      One comment on the two flat cable connectors. The black plastic part should be lifted carefully with a very thin screwdriver and then the flat cable can be removed out easily.
      The TV model is LG37LE5500
      Manufactured: March 2010

      Thanks a lot
      Oded

    2. Thanks for the comment! There are different types of solder that melt at different temps. I’m guessing altitude and humility could play a part as well. The temp I listed has seemed to work for most people… I’ll update my post to let people know they might need a higher Temp.

      Most solder is a mixture of Tin and Lead.
      Tin/Lead mixtures examples:
      50/50: melts between 183–215 °C (361–419 °F)
      60/40: melts between 183–190 °C (361–374 °F)

  24. Amazing! I had no inputs working except for the coaxial, on an LG 32LD550. Now all 4 HDMI ports work flawlessly. Haven’t tested rest yet, but HDMI is all I really wanted. Easiest fix ever.

    Be careful with the cable connectord to the board though. How to disconnect them isn’t obvious to the inexperienced. Here’s how. Check the picture of the board at the top of the page.

    On the upper right of the picture there are two ribbon cables. To disconnect these, gently lift the thin black plastic strip on the connector (it flips up), then you can pull the ribbon cables out.

    On the lower right of the picture there’s a wide header block with gray wires. Squeeze the sides (opposite ends) of the connector to release it and pull.

    On the upper left are two other connectors. In the center of these is a small plastic part. Press down gently on the edge of that (the edge near the wires), causing the opposite edge to lift a bit to unlatch. While pressing, pull gently in the direction of thewires, away from the board.

  25. Tried this last night, friend rang during process, told him I was baking the tv motherboard, he now has serious concerns for my wellbeing.

    I don’t care, tv works, thanks for the tip.

    It was a 52LD560 with HDMI issues, now appears to be working better than ever.

  26. I can’t freak’n believe it!!! I am the worlds least handiest guy… and this baking method worked like a charm. I have an LG 42″ LED… model 42LE5400… purchased in 2010

    The hardest part was getting the face plate off the side jacks and on the antenna jack. I’m pretty sure it’s alluminum and not plastic. Trying to bend back the clips that hold it in place was a delicate procedure.

    Thanks a million for sharing such a detailed fix for this problem. I’m disappointed that LG hasn’t stepped up, leading us to resort to sticking their parts in an oven 😉

  27. Wow wow wow. Can’t believe this worked thank you so much. Same story as everybody else. 4-5 year old LG 42″ TV HDMI inputs just stopped working yesterday. Thought I was going to have to buy a new TV. Thought I would at least try to find a solution online and found this site. I would challenge the above poster for title of world’s least handy guy. I have never fixed anything in my life. Can’t believe this worked. Thought I had bricked the TV to start with as when I turned it on had big stripes down LHS of TV. Luckily I had just not inserted the ribbons back correctly. Instructions were clear and worked perfectly. However, I do owe my wife a new bread board now as current one is a bit tinged from going in the oven (word of advice don’t put your board on piece of wood when you put in oven !!)

  30. I tried this today with my LG 42LE5400. The HDMI inputs went out about a year ago and we’ve been watching TV using the A/V input which gives a distorted picture. Finally I googled the problem and came across this page. Prior poster was right about the face plate and antenna jack being the hardest part – at one point I bent the board a little and was worried I’d damaged something.

    In the oven at 385ish for ten minutes, the aroma of burning electrical components filled the apartment. After putting halfway back together I plugged it up and disappointed to see the right half the screen a fuzzy mess with the other half perfect. I powered down and re-set the two ribbon cables. Powered back on and … SUCCESS!! My wife can’t believe it. Thank you so much!! We’re loving our HD picture again!

  31. Thank you very much Zedic!

    We had issues with the HMDI connectors on our TV (model LG42L V5400). The main board computer also took an unusually long time to boot.

    I tried what you suggested (385F for ~13 minutes) and now a have a fully functioning LG television!

    Cheers

    Bernie

  33. Thanks for the GREAT info on how to repair the board. I have a 42LD550. Did what you said and it worked like a charm.
    You saved me a bunch of money. Thanks again.

  34. Hey guy,

    I would like to thank you. 180 degrees celsius and 10 minutes of baking time did the trick.

    I would like to send you a case of beer for this 🙂

    Greets andmany many thanks from germany,
    André

  35. 34 days later and the HDMI ports stopped working again on my LG 42LE5500. I was watching a movie on the media player and suddenly I got the “no signal” message. I could still hear the sound of the movie, the same way that happened before.
    I’ll try to bake it again tomorrow, maybe at a higher temperature for a longer time than before.

    1. This morning, before taking the TV down from the wall, I tested it again and it was working. At noon I had time to continue the movie from last night, but after 20 minutes the HDMI went out again, probably because overheating due to hot weather here in Bucharest. I did not bake it anymore and now, in the evening, it was working again and I finished watching the movie.
      I hope it will not be overheating in the future. Maybe this happened because I didn’t use the TV for about a week.
      About my remark in the previous post about still hearing the sound: this is because I use a receiver that decodes the sound and sends it to the speakers and only the image through the HDMI to the TV.

  36. Well I took a shot and went through your procedure and baked the main board, after I thought the caps are my issue (replaced them all).
    TV had worked for 1 day and then the issue repeated, it seems like after creating a disconnection of power to the board does good to it.

    any idea what could be the issue?

  37. Successful case here!
    I own a 55LX9500 bought in 2011, all the HDMI inputs went out 1 week ago, then I found this post and after “baking” the main card around 10 min at 200 celsius now It´s working perfectly.
    Thank you very much!

  38. Hi Zedic ,
    i’d like to thank you on that post that helped a lot of LG TV owners,
    i had also the HDMI problem with my 47LD650 TV and i used the baked method you described above , but unfortunately i reattached it but the TV couldn’t boot up , the power light keeps flashing red

    i couldn’t find why that happens so i thought i’ll bake it again as another dude did ,
    but before i bake it again i found that in the oven shelf i found these parts detached from back of the motherboard
    i did exactly the same 10 min 200 C trick but i got these chips detached although i was very careful while handling the motherboard

    can you guide me what shall i do next or how i can attach these chips back ?
    Thanks again and sorry for bothering

    below is a link to the chips that fall from the motherboard if that can help
    http://postimg.org/image/kt9qt13uj/

    1. Ouch, that’s not good. I’m guessing you didn’t put it on cardboard? If you took pictures of the board before you baked it, then you should be able to figure out how to put them back exactly as they were. You can solder them back in place with a good small tip soldering iron. Soldering is not that difficult. Search for “How to solder” and you’ll find lots of documents and videos. Good luck!

  43. Mate if you live in Adelaide Australia I would like to buy you a beer, you just saved us needing to get a new TV. The kids nearly cried when they couldn’t watch there new movie after it would sit there saying no signal.. With me ripping my hair out thinking it was the htpc. Seriously thank-you so much for putting the effort in with making this post. And for free it seriously means alot to everyone including my self that it has help. Thank you

  44. TV stopped powering on after power surge. I replaced power board. TV now powers on but none of the HDMI ports work, only works with component cables. I am going to try this fix. One question, can I also bake my original power board to fix the soldered connections like I am going to bake my mother board? Thank you.

  46. Had been pulling my hair apart the past over one week with my LG 32LM6410 October 2012 manufactured, here in India purchased from Dubai. Firstly tried the hair drier trick. Worked for a few minutes and then back to square one with the LG logo frozen. LG support was called for but the way they are useless as everyone says. The guy came with a replacement board without the Wi-Fi connector for a different model sent him back. Then gave up for a few days. Being monsoon here thought humidity was playing havoc. Had read about the oven baking stuff but was too sceptical until I read your post. Went through as You suggested, put the board back, (noticed the LAN port had loosened off the board, so just pulled it off, since I wouldn’t use it) and lo the TV started. But this was short lived and after half an hour it played up again. Re-did the oven bake @ 200°C for 10 minutes. Restored the board, the TV came back, but alas this too didn’t work long. Frustrating! Thanks all the same. Any suggestions for further remedy?

    1. I’m sorry my friend I don’t think the solder connections would break that quickly, so the problem may be something else. It sounds like it might be time for a new board.

  47. Hi Zedic! Thank you for this helpful post.
    I recently purchased and LG 42″ TV from craigslist and the owner so kindly did not tell me that none of the HDMI ports or component outlets are working. To my non-surprise, he is not responding to my multiple texts and calls. I thought I was out $200 when I finally found this post.
    I followed your directions very carefully, but being the 20 year old tech-challenged girl that I am, I think I may have went wrong somewhere.
    The TV still turns on, but the picture is blank and when I press any buttons on the remote, nothing happens. I know you won’t know exactly what went wrong, but do you have any suggestions?

    If I bake it again, how long should I wait? I just did it for the first time tonight. Right now I’m contemplating my next step. Hopefully it isn’t completely fried 🙁

    1. Hey you! My spider-sense tells me you might not have the board connected correctly. I would double check all your connections before you bake it again. Double check everything especially the ribbon cables, because they can be a little tricky. Make sure you did not swap them around, and they are all the way under the clips and snug.

  48. Wow, just tried this and it worked here also. I have an LG 32 ld550 32″ . The hdmi’s had gone months ago but yesterday it wouldnt get past the splash screen. The repair would have been $150 ( mainboard $99 and 50 labor) Thanks for this info ,what a savings.

  50. 55 in LG LCD TV, all 4 HDMI ports randomly cut out while watching it tonight. Tinkered around, then turned to Google where I found this. Initial reaction: On no uncertain terms am I going to try that. Absolutely ridiculous. Found the warranty (well expired), contacted LG Service (no techs for home service in my area), and decided I had nothing to lose – disassembling and baking parts of the TV it is! It was actually amazing easy – undo a few screws, unplug a couple wires, and bake. Long story short…it worked. I’m laughing, stunned, and incredibly grateful. THANK YOU SO MUCH!!! You have literally saved me hundreds if not over a thousand dollars (next option was a new TV)!

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