Re: Sharp Aquos 42D64U -- tiny vertical lines



Thanks for your reply. Yeah I actually tested the TV after I reseated the flat cables and the issue was still present.. then I tried to get the heat shield off the main board but wasn't able to, it was secured on one side with some plastic fasteners which I did not want to break. As I screwed the shield back down again I noticed that it didn't make good contact with one of the larger chips (see picture) so I bent it a bit to put more pressure on that chip. Perhaps this pressure is what fixed the issue as to my surprise...

Re: Sharp Aquos 42D64U -- tiny vertical lines

Well whatever I did it worked!! I did not find any chips or ICs to re-solder, they are all surface mount and would require equipment I don't have to solder. But I did re-seat all the ribbon cables and I loosened and re-tightened some of the screws holding down the heat shield on the large circuit board. Not sure what solved it but now the TV is like new, picture is great!

Not sure if I fixed it permanently.. if it comes back, can you by looking at the attached pictures give me some clues as to which ICs or chips...

Re: Sharp Aquos 42D64U -- tiny vertical lines

I have the same issue, vertical lines suddenly appeared on my 10 year old Sharp Aquos LC-42D72U. See attached pictures of the screen. The lines are there even in the menus so nothing to do with input signal.

I am going to crack open the case and see if I can find any cold solder joints or anything else loose as you suggest. Will post results later... ...