Question about JVC PD-42WV74 42 in. Plasma EDTV
Vertical regularly spaced lines which persistently cover the screen. Only on occasions do they disappear, for minutes or so before reappearing. What is the problem?
Check its power supply board for any damaged capacitors. Replace them if found or suspected. Take special care to main filter capacitors. check all the output voltage smoothing capaciotrs too.
If all are OK, and still the problem perists, replace the power supply board as card basis.
Posted on Feb 08, 2012
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Posted on Jan 02, 2017
In some cases, there are minor defects in some parts of the screen. Points that do not light, points with
brightness different from that of the periphery, or points with color different from that of the periphery.
Some pixels will always be on or always off. Please note that this is not a malfunction. So what this says is that it's not the Plasma Cell problem, its more like a bad board inside. You will need more info like schematic and find out which area the bad part is in.
Posted on Jan 04, 2008
The problem is that there is a bad connection/bad soldering in one/several connectors where the flatcables to the displayunit is connected to the rest of the electronics.
A tip is to mark exactly where the lines appear (with paper scotchtape) on the side of the unit, so you can se which connector/-s that you should resolder once you have dismantled the TV.
Posted on Oct 17, 2010
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