Zenith Z50PG10 Red Horizontal line

[ComputerGuy1]

My television has been like this for one year, I am wondering what is going on with it. Here are some pictures.

[tw2005]

Re: Zenith Z50PG10 Red Horizontal line

Possibly faulty upper buffer board

[tom66]

Re: Zenith Z50PG10 Red Horizontal line

Yes, I agree, bad top buffer.

[ComputerGuy1]

Re: Zenith Z50PG10 Red Horizontal line

How can I check the buffer board. I know to look for bulging caps and discoloring around them.

[ComputerGuy1]

Re: Zenith Z50PG10 Red Horizontal line

That would be the top y-buffer board.

[tw2005]

Re: Zenith Z50PG10 Red Horizontal line

How can I check the buffer board. I know to look for bulging caps and discoloring around them.

might want to pop the back off and put a photo of the boards in this. just did a search and get a couple oF LG variants, one of which is the notorious IPM boards of the 50PX5D era where the buffers have surface FETs that can blow.

All you can do is check for shorted outputs at the buffer connectors to the panel. I don't know these boards well enough without researching a fair bit. Someone else should have a fair idea.

[tom66]

Re: Zenith Z50PG10 Red Horizontal line

How can I check the buffer board. I know to look for bulging caps and discoloring around them.

There's nearly no point; this fault can only be caused by a bad buffer as far as I know. But, if you want, here is a test you can do:
https://www.youtube.com/watch?v=51SZsfH60EYa

[tw2005]

Re: Zenith Z50PG10 Red Horizontal line

There's nearly no point; this fault can only be caused by a bad buffer as far as I know. But, if you want, here is a test you can do:
https://www.youtube.com/watch?v=51SZsfH60EYa

I'm with you , I'd just find another board if cheap enough and try it.