Sharp LCD LC-52D64U Reappearing line

[elirock89]

Hello all! Hope I can get some help with this one.

I got this tv from a friend who was going to throw it away. One of my other friends said it could be an easy fix. The tv has a 4 inch wide line that phases in and out randomly it seems. Sometimes it looks gorgeous, then after a while it starts to stutter in the 4inch wide vertical line, eventually it will get worse then completely black, only in that line. Sometimes it is there as soon as you turn it on.

I replaced the tcon board, but it came back after a couple hours of use.

Any ideas are much appreciated!

[tom66]

Re: Sharp LCD LC-52D64U Reappearing line

This is probably a tab bond problem. The symptoms can vary.
http://www.youtube.com/watch?v=purk_SyiT44

The tab in question is likely the one above the area that is faulty.

Be very careful when working on the tab bonds! The panel is very delicate and easily damaged.

[elirock89]

Re: Sharp LCD LC-52D64U Reappearing line

Anyone know how to take these apart to get to those tabs? Seems like there is so little information on Sharp tv's.

[elirock89]

Re: Sharp LCD LC-52D64U Reappearing line

So I tried the solution in the YouTube video with little success. When this line starts to show putting pressure on the tabs did not improve it at all.

[tom66]

Re: Sharp LCD LC-52D64U Reappearing line

The problem is probably thermally dependent then. If you can get hold of a hair dryer, try heating up parts of the TV while the fault is not present. If the fault comes back when you heat a particular area, turn the TV off for an hour or so, make sure there's no line, then try the area again to verify. I'd focus on the t-con, main and top of the LCD panel, a few minutes at a time should be sufficient.