Panasonic TC-L32C22 - Bottom Half Screen Black or Freeze

[NihonNoir]

Description: "It turns on and functions, except the bottom half of the screen will either be black or freeze."

Is this worth attempting? Looking for a backup in the likely event that I can't fix this Sanyo.

Thank you.

[tom66]

Re: Panasonic TC-L32C22 - Bottom Half Screen Black or Freeze

My immediate gut feeling would be an LCD panel fault, so I'd tread carefully unless free or very cheap (thinking $25 max IMO.)
"Likely event you can't fix Sanyo" - well I hate to sound like a doting mother but with that attitude...

[NihonNoir]

Re: Panasonic TC-L32C22 - Bottom Half Screen Black or Freeze

My immediate gut feeling would be an LCD panel fault, so I'd tread carefully unless free or very cheap (thinking $25 max IMO.)
"Likely event you can't fix Sanyo" - well I hate to sound like a doting mother but with that attitude...

Yeah I know - I'm just getting frustrated. I want a TV!

So I offered him $20. I did some research and from what I gather, it *could* be bad ribbon cables or the way they attach to the panel perimeter. And I saw one of your videos where you said that when screens are split in half, it could be the D-board, I think.

Be nice if it were bad caps, too.

I'm thinking of meeting him, and seeing if applying pressure or twisting the panel bezel might give any change. Then I'll know it's something I might be able to MacGyver up, at least.

[tom66]

Re: Panasonic TC-L32C22 - Bottom Half Screen Black or Freeze

No D-board in this LCD. It'll be panel or main, panel most likely. Either way, $20 isn't bad if you just strip it for parts or try to learn how TV PSU works by making measurements at various points.

[NihonNoir]

Re: Panasonic TC-L32C22 - Bottom Half Screen Black or Freeze

No D-board in this LCD.

That would explain why it didn't come up in Google search.

Here are some pictures of what it's doing, if you can tell anything else from them. Thank you!

[tom66]

Re: Panasonic TC-L32C22 - Bottom Half Screen Black or Freeze

That's definitely panel right there.

[NihonNoir]

Re: Panasonic TC-L32C22 - Bottom Half Screen Black or Freeze

I figured. I went through about 20 pages of the forum last night looking for similar symptoms, and bad panel kept coming up. Saw you got lucky with a disconnected cable in one of your videos. Nice.

I notice in the pictures that the 'damage' changes and moves around - is that typically a symptom of bad tab bonds?

Hell, if I could get it to stay like it is in the first picture, I'd be satisfied with it.

Thank you!

[tom66]

Re: Panasonic TC-L32C22 - Bottom Half Screen Black or Freeze

That was a plasma. They rarely have panel problems, even if the power electronics tend to be less reliable, overall, they are more reliable generally.

You can try fiddling with the tab bonds.
http://www.youtube.com/watch?v=purk_SyiT44

So many LCD panels dying!!

[NihonNoir]

Re: Panasonic TC-L32C22 - Bottom Half Screen Black or Freeze

That was a plasma. They rarely have panel problems, even if the power electronics tend to be less reliable, overall, they are more reliable generally.

You can try fiddling with the tab bonds.
http://www.youtube.com/watch?v=purk_SyiT44

So many LCD panels dying!!

Yeah I've seen that video. Learned loads from Norcal. He did a video on my model Sanyo with bad IC chip, too.

Think I'm gonna get it and play around with it. See if I can't get him down a little more on it.

Thanks for the help.