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LG needs to be cycled to start, capacitor?

Last response: in Home Theatre
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April 12, 2012 2:42:52 PM

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/4Wh...

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

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

Close Up Front
http://i1052.photobucket.com/albums/s449/hillmanant/3Ca...
It says 105K 250H on it you can't read it well in the pic.

More about : cycled start capacitor

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a b x TV
April 19, 2012 3:38:26 PM

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
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April 19, 2012 4:50:27 PM

Thanks americanaudio but I already found shopjimmy and ordered the board. Since you were the only to answer gratz best answer.
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April 19, 2012 4:50:40 PM

Best answer selected by hillmanant.
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October 9, 2012 4:40:48 PM

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?
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September 15, 2014 4:03:56 AM


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
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!