60" plasma keeps shutting off


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60" plasma keeps shutting off

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isubeatle
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Jun 2, 2015, 12:30 AM

Post #1 of 5 (1543 views)
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60" plasma keeps shutting off	Can't Post

I've got an LG 60" plasma that is about 4 year old and over the last month or so it has started to turn itself off.

after turning the TV on for the first time in the day, it'll be fine for about an hour or so. Then it will just switch itself off. after that it will stay on for anywhere from 5 mins to 30 mins or longer.

After doing some research it sounds like it's the power supply board and i found the part i need on ebay. I'm pretty confident that if i order it i'll be able to replace the old one ... however i just want to make sure that's the problem since the board is $79.

My current board looks like it has some white corrosion on the a few areas but i can't tell if that's normal or not.

thank you!

isubeatle
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Jun 2, 2015, 12:48 AM

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Re: [isubeatle] 60" plasma keeps shutting off [In reply to]	Can't Post

here's an image of the power board
http://i.imgur.com/QhmbO6Y.jpg

jts1957
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Jun 2, 2015, 2:02 AM

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Re: [isubeatle] 60" plasma keeps shutting off [In reply to]	Can't Post

White is heat sink compound - normal.

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isubeatle
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Jun 2, 2015, 2:09 AM

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Re: [jts1957] 60" plasma keeps shutting off [In reply to]	Can't Post

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White is heat sink compound - normal.

Oh gotcha. Is there any way to tell if it's the power supply board that's bad?

jts1957
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Jun 2, 2015, 2:34 AM

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Re: [isubeatle] 60" plasma keeps shutting off [In reply to]	Can't Post

Measure voltages at all power supply connector pins during normal and failure times. I think you're safe assuming AC line in connector has power. Be especially vigilant of any PSON or other turn-on or protect off pins (P813).

Best I can do with details YOU've provided.

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Location: Far, Far Away

(This post was edited by jts1957 on Jun 2, 2015, 3:37 AM)

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