Question about Televison & Video
This is a serious problem. It may be a design problem or a defect in the video processing. Since it is temperature related..... or digital error buildup of some kind - it is not an easy one to diagnose without some hands-on observations and measurements.
A tech will have to put on an oscilliscope and trace through the circuits and find out where the vertical bar is being introduced. These sets are grossly complicated from a circuits point of view with several IC chips that make it difficult to troubleshoot. If the TV warranty gets to it, they may replace the main board or the display driver or whatever is producing the malfunction.
But, I believe strongly it is a manufacturers warranty problem and they should be held to it. Make sure they realize it has been going on for before the warranty expired and you have not been able to get their attention.
FEW TROUBLESHOOTING STEPS YOU CAN TRY:
ONE: Check the line cord. Wiggle both ends near the molded part.
TWO:Do a hard reset by unpluging all the cords for 4hrs and then plug it back.
THREE:The whacking test is to just bang or smack the set with your hand on the back, side, top, etc., to see if there are loose connections or cold solder joints inside that are acting up. If so, the banging should knock them back to normal and the set should restore. You might have to use some creative banging and some have had to put a book or magazine under one corner to torque the chassis enough to get it to work reliably.
If the problem still persists then like i said before,you will have to get it repaired by a technician.
Please don't forget to rate the solution
Posted on Apr 05, 2008
Try to turn off unit, let it cool for a few minutes and turn it back on without a cable or devices attach to it. If the black line still appears then there might be a problem with the unit it self, if there is non then chances are you need to make sure that cables are tightly plugin to your tv.
Update me for results, thanks!!
Posted on Apr 05, 2008
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Posted on Jan 02, 2017
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