Question about Sharp LC46D82U 46 in. LCD HDTV
Posted by Anonymous on
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Posted on Jan 02, 2017
my maxent plasma tv has the same problem but it has green and red lines. I found out that hitting the tv from the back works. It used to last a long time but now i have to get up now and then to slap the tv on back with my hands! anyone with a long term solution?
Posted on Jun 12, 2008
SOURCE: HORIZONTAL LINE THROUGH PICTURE
Defective LCD panel. I hope it is under warranty, otherwise you'll have to live with it or buy a new set, as the LCD panel costs almost as much as the TV itself.
Posted on May 21, 2009
I don't know anything of this particular TV, but what you describe is generally a known problem in LCD displays.
it's caused by one of two things - either parts of the LCD film thin film for the vertical lines detatching from the board it is glued on or certain micro controllers that are also glued on the LCD film starting to get burned bit by bit. In both cases, the whole vertical line responsible for one of the three colors that a single pixel consist off get dead and depending on how they get dead they get either all open or all closed, respectively completely turning on or shutting off the particular color.
It is most commonly the first case, but whichever of the two it is, there's no known cure for it within reasonable cost.
I've experimented a few times and was able to press the film to the board by using firm objects and fastening the display case, but it would often cause more harm than it brings and even more often it would just not hold reliably. Overall I do not recommend experimenting with it it unless you have lots of time on your hands and you're ready to face an evern worse damage.
In a very rare cases it might also be the tcon also known as LCD controller...but from what you describe it's hardly it. It's worth trying, but if I had to take a guess I'd rather rule it out - it sounds like the LCD.
And the bottom line is you just have to face it - you likely need a new TV. If there's some chance for me to be wrong, try the tcon board at the back first. Then just sold the TV on eBay or CL for whoever gives you most and apply the money towards the new purchase.
Don't kill me, I'm just the messenger :-)
Posted on Nov 09, 2009
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