LN52A550P3FXZA shutting down

[vbrad511]

I've been tasked with figuring out a friend's Sammy that'll fire up and run just fine, for about 15 or 20 minutes, then simply shut off. I can turn it right back on and it'll run for a while, then power down again. It's had the 4 main caps replaced, Radio Shack style, but that didn't change anything.
Suggestions?

Thanks

[johnboy1313]

Re: LN52A550P3FXZA shutting down

Try unplugging the tcon and see if it will still shut down.

[budm]

Re: LN52A550P3FXZA shutting down

You may want to go ahead and replace C102 on the main board, it will need it sooner or later.
http://www.shopjimmy.com/samsung-bn9...550p3fxza.htm#

[vbrad511]

Re: LN52A550P3FXZA shutting down

Update..I had another main board from a working ln40 series tv, 00975c I swapped in, which gave me no display at all. I put the 52a board in my good ln40 and it wouldn't even power on. I put both boards back in their respective tvs and both fired back up. Unplugging the tcon had no change on the 52, however the turning off after 20 minutes had been with no input connected. I plugged in a dvd player and it ran flawlessly for several hours yesterday. Should the boards have interchanged without issue? Are they flashed differently? The guy who owns the 52 says he got the green screen and the screeching at least once. I'll get that 102 swapped, but is there anything else I should be on the lookout for?