Question about Panasonic Televison & Video
Posted by Anonymous on
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to both LCD & Plasma TV screen are given with illustrations. You can get an idea about the fault to an extent.
Posted on Mar 28, 2015
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Posted on Jan 02, 2017
If the set is still in warranty, call for warranty service. If not and you feel comfortable working on the set, carefully open up the back and reseat all of hte cables and connectors. This can be caused by marginal connections inside the set.
Keep us posted on your progress and results.
Posted on Aug 29, 2008
I think that you have dry solder joints on either the vertical scan board, the focus board, the line output stage, or the chroma panel. Hope this helps.
Posted on Oct 05, 2008
SOURCE: Lines on tv screen
Both sound like bad LCD panels. The following must be answered to confirm this:
Do the lines appear on all inputs/all signal sources?
Can they be seen in the OSD/menu?
If yes to both questions, it is likely that the LCD panel is bad
Posted on Oct 20, 2008
The red line driver at that point isn't working or there is a bad connection to the panel for that line. (I assume the intensity and hue of the cyan line varies witht the picture). What type of screen is it? Plasma or LCD? The following is for LCDs and may not apply to plasma panels. (I haven't had to fix those yet.)
Once in a while you can solve the problem on an LCD by gently massaging the connector to the display panel edge at the bad spot, although there is a risk of causing other lines to drop out. I once fixed an LCD that had a hair caught between the elastomeric connector and the display glass, but if that were the culprit in your case, you'd probably be missing more than one line. It could also be a problem with the driver chip for that line.
Be very careful about tearing into the LCD. The connections are very delicate, the fluorescent backlight tubes are glass and have mercury inside, and the potential for electrostatic discharge damage is always a concern. It's easy to cause more problems than you fix when you get into the connections, although those can usually be reversed with patience and steady hands. The worst case is a misalignment that would mess up your color registration (color drive going to the wrong line). Most panels have a sticker inside warning against removing the driver electronics. It's there for a good reason.
If I've scared you off, or if the connector massage doesn't work, there are companies like Moniserv that specialize in repairing LCDs. They have the equipment and dust-free facilities needed to repair bad panel drivers.
Posted on Mar 23, 2009
Tips for a great answer:
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