LG Plasma TV no picture

phantom27

Honorable
Nov 6, 2013
2
0
10,510
I have an LG 60PA5500-UG

I was watching TV the other day and the TV just turned off on it's own. I turned it back on and I had sound but no picture. I left the TV off for a few hours and tried it again. It came one picture and all for about 15 mins and went off again. I turned it back on again and had sound but no picture. About a week later I decided to take it out to my shop and work on it, I plugged it in and it worked just fine. I connected my laptop via HDMI to all 3 ports and the darn TV worked just fine for 7 hours straight with not even a glitch. I turned it off and back on a few times and it worked just fine. The next day I tried it again, the TV came on just fine and about 12 mins in the TV turned off on its own again. I turned it back on and it came on with sound and picture for about a min and went off again. I turned it back on and now I'm getting sound and no picture.

Can someone please help me with this
 
Seems like on mainboard which converts signal has been damaged from use. For how long do you have it? If you have it from over 6-9 years it did its job, but as i've typed in ebay parts are 60$-100$ (in US and EU).
Does it still have warranty?
You could take it to repair shop, maybe just a converter or capacitor went bad.