Vertical lines I have a JVC HD-70G886. Today when I was watching it vertical lines appeared in about 5 areas across the screen. I checked input sources and it was the same for all. I had replaced the lamp about 2 months ago and it has worked great until this. I unplugged it and let it cool for a couple hours. When I turned in back on the same lines showed up about 15 seconds after I turned it and seemed to get worse. Is it a power supply problem? Any suggestions?
Get some freeze spray from radio shack then
try placing a little spray on each chip on the
video board and power supply board and each time you spray a chip look for the picture to clear up. When the lines go away you have located the
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Try a "hard reset" first by unplugging the set for 30 seconds. and if no help, you may have a problem with the SMPS power supply, it might have a bad capacitor or two by now. Worth repair if engine is good compared to a flat panel.
That is a defective Digital Light Processor. It is part of the Light Engine Assembly. I definitely recommend NOT repairing it. Average cost to replace is around $650.00 if still available. Mfg's want DLP sets off the market for to many problems.
It appears like there is a bad capacitor in the horizontal circuit. Try to put a fan near the ventilation trap, just for a test. the part cost almost nothing but having someone to your house is expensive. Your decision.
vertical output ic needs to be resoldered. careful leaving that bright line displayed on the screen as this will cause a permanent phosphor burn into the tube. this can not be corrected once burned unless you replace the tube. mch