Question about Panasonic Viera TH-42PZ80U Plasma TV
I also have the TH42PZ80U and I just had the certified Panasonic repair person out. The problem is this is the THIRD time in two years. Any quesses on what's wrong? It's a bad panel, again. That's right, three bad panels in the two years I've own this tv. I am now one month out of the panel warranty and guess how much the bid is to replace the panel. $1542! I only paid $1300 for it. Panasonic better make this right. I think a whole new tv is in order just for my trouble. After reading about so many of us having this problem, we are probably getting close to a class action law suit.
Posted on May 19, 2010
So I am having the same problem with my Panasonic TH-42PZ80U, a black bar the width of the ribbon cable down the center of my screen. I removed the back and pinpointed the problem to ribbon CB5. Unplugged the ribbon and plugged it back in but there was no change. Any suggestions?
Posted on Jan 19, 2012
You may have a bad drive board. poor connection on a cable or a defective panel. This set had a 2 year warranty on the plasma panel. You should call Panasonic to let them know.
Posted on Apr 29, 2010
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Posted on Jan 02, 2017
SOURCE: Black Line down center of screen
Had the same problem. Was quoted $800 to fix. Searched the internet for 6 months and found this thread on avforums.com Read through all the posts. Very simple fix, but you have to have some mechanical inclinations or you can cause more problems than you started with. I was up to 5 of the black lines, but decided to attempt the soldering these guys did and fixed it all for the cost of a soldering iron!
Had the same problem. Was quoted $800 to fix. Searched the internet for 6 months and found this thread on avforums.com
Read through all the posts. Very simple fix, but you have to have some mechanical inclinations or you can cause more problems than you started with. I was up to 5 of the black lines, but decided to attempt the soldering these guys did and fixed it all for the cost of a soldering iron!
Posted on Oct 12, 2007
SOURCE: Black Line Down Center of Screen
Dry solder joints on the pins of the vertical integrated circuit may have caused this problem Tap each I/C lightly with a plastic screwdriver handle to find the intermittent one. It is the one with a heat sink attached.
Posted on Aug 10, 2008
I had the same problem to and I fixed it.
At the bottom of the plasma there are six or seven ribbon cabbles that come out of the panel and connect to like driver boards. Each ribbon drives that section of the panel. Mine had it down the centre so I unplugged that ribbon cable and on the underside of a metal plate attached to it there are four big resistors and four small ones. The big ones labelled 100 required resoldering. Once they were resoldered it worked just fine.
Posted on Sep 24, 2008
Sounds like the middle scalar board is defective. Since the issue comes and goes it could just be a loose connection to the between the scalar board and the PDP Module (plasma panel).
Great caution needs to be taken when checking this connection because it is a ribbon cable connection it and needs to be put in correctly aligned or it could cause a short in one of the circuit boards.
Posted on Oct 07, 2009
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