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LG needs to be cycled to start, capacitor?

Hello All! :hello:

I have an 42"LG Model 42PG20-ua

The TV won't start with just a button push, I need to turn it on and it shuts off, I turn it on and it shuts off, over and over, maybe 4-6 times before it will stay on.

I researched a little on the internet and figured it had to be a capcitor. Going with this, I took the back off and saw a burnt black metalized capacitor blown out on the right on the Z-SUS board(I DL'd the service manual). My question is should I order the capacitor or is the whole board shot? If I need to replace the board where do I buy it? If I can just solder in a new capacitor where can I get one seems everyone out there wants to sell a thousand of them and don't have time for just one. Pics Below. Thanks in advance guys!

Whole TV Location
http://i1052.photobucket.com/albums/s449/hillmanant/4WholeBoard.jpg

Side View
http://i1052.photobucket.com/albums/s449/hillmanant/1CapacitorSide.jpg

Side view 2
http://i1052.photobucket.com/albums/s449/hillmanant/2CapacitorSide2.jpg

Close Up Front
http://i1052.photobucket.com/albums/s449/hillmanant/3CapacitorCloseUpFront.jpg
It says 105K 250H on it you can't read it well in the pic.
6 answers Last reply Best Answer
More about cycled start capacitor
  1. Best answer
    If there is a relay on the board that the schematic shows is related to the burned cap then I would replace the cap. Try eBay, or mouser.com
    If not then I would replace the board. Try shopjimmy.com or just google the board number and replacement.
    Good luck
  2. Thanks americanaudio but I already found shopjimmy and ordered the board. Since you were the only to answer gratz best answer.
  3. Best answer selected by hillmanant.
  4. hillmanant said:
    Thanks americanaudio but I already found shopjimmy and ordered the board. Since you were the only to answer gratz best answer.



    how did it work for you? i have the same issue with my tv and the repair shop advised it would cost over $300 for just the part and that the part was on back order for over a year?
  5. kll9589 said:
    hillmanant said:
    Thanks americanaudio but I already found shopjimmy and ordered the board. Since you were the only to answer gratz best answer.



    how did it work for you? i have the same issue with my tv and the repair shop advised it would cost over $300 for just the part and that the part was on back order for over a year?


    I am having the same problem with my LG 37LE5500 it takes about 5 cycles of on/off then it works fine.
    Could it be the Power Supply board or the Main Control board?
    I hope somebody can help with the right answer
  6. branhk said:

    kll9589 said:
    hillmanant said:
    Thanks americanaudio but I already found shopjimmy and ordered the board. Since you were the only to answer gratz best answer.



    how did it work for you? i have the same issue with my tv and the repair shop advised it would cost over $300 for just the part and that the part was on back order for over a year?


    I am having the same problem with my LG 37LE5500 it takes about 5 cycles of on/off then it works fine.
    Could it be the Power Supply board or the Main Control board?
    I hope somebody can help with the right answer


    This is an old post but I figured I'd finish it for solidarity. I've fixed a few of these since and Its almost always a few bad capacitors on the power board look for bulging or seeping capacitors and replace them first I replaced 2 small caps on my dads power supply board and it works like new again.
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