Panasonic TH-50PZ85U (before I scrap)

[Shinju]

Hey all.

I recently got a TH-50PZ85U for free, the PS was giving the 2/10 blink.

Fast Forward, I got a working Power supply, the Panel fired right up and to my disappointment on the far right side of the panel, there was a lower buffer sized row of colored lines that would shift colors (not positions).


This buffer connection was under the HDMI 3 port box (lots of heat) when I pulled the box off I can see that the ribbon cable was not put in well from the factory as it was kind of shifted so I pulled it and reseated it to no change.

When the ribbon was disconnected what should have been a solid black void was rainbow sparkles in place.

I pulled the heat sink off the IC plate and look at the IC on the ribbon from the bottom and when I applied pressure to the IC the rainbow sparkles would disappear but the lines you see on the far far right would not change.

I am 99.9% sure this is a bad panel but before I scrap the screen I wanted to ask. I already pulled all the guts out minus the lower buffers as they were pretty cheap anyway.

Here is a horrible photo, my plasma table suffered a broken leg so with me holding this up and snapping a photo this is what I got."

Bummer, this actually had a pretty nice picture other then those pesky lines!



On a side note I got a ton of good parts! Will trade for a TNPA4782 (no suffix) SC board!

[tom66]

Re: Panasonic TH-50PZ85U (before I scrap)

Looks like a bad panel sadly. Did you say you had a FET on the P board go short in Vda circuit? (Or was that someone else...)

These power boards take 120V from the 15V/Vda transformer and buck it down to 75V. If the FET goes short, Vda would overshoot to 120V which would surely do some damage somewhere.

[Shinju]

Re: Panasonic TH-50PZ85U (before I scrap)

Must have been someone else, this is my 3rd Panasonic .

I figured as much on the panel being toast. like I said I got parts now! I just wish this SC board was compatible with my G15!