Question about LG Televison & Video
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Posted on Jan 02, 2017
It's a symptom of what everyone refers to as vertical banding. Have you tried a light grey screen to check for banding? It may be that there is a brightness difference between two bands that causes the line to appear darker. You may also find that there is more banding in other areas of the screen than you have realized.
but there's no simple solution; though some claim that unplugging everything from the tv and unplugging the tv power for 24hrs will help. I think that's a crock, but you can try it.
do you have a warranty?
Posted on Jun 17, 2008
Grey screen means the T-CON board is not getting the 12vdc feeding it, same for sound. So check to see if you do have 12vdc from the power supply first.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
Posted on Jul 11, 2010
No, gas problems would have generated failures all over the screen, not in distinct lines.
No, these lines are caused by badly functioning buffer boards: the chips on it that directly control those specific lines of pixels overheat and start to malfunction. The problem is getting worse because the status of the chips is getting worse: they need less and less time before starting to fail. In the end it will fail for good and those lines will be permanently on the screen.
The faulty buffer board will have to be replaced. You should call a repairman to do it - to access them the entire tv must be completely dismantled and this is a very tricky operation in a plasma tv. On top of that the replacement board is very hard to obtain by a regular person, it will have to be ordered at the dealer. Fortunately it's not an expensive part - less than $40 per piece.
Posted on Feb 05, 2011
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