Chosen Solution
Hi Guys I have a Sonvy Bravia model KDL-50W685A that i bought at 2013 . Suddenly the screen initially start to have pixels randmly like when loos the HD Signal . but after that shows horizontal blue lines . The sound working ok and the channels change also . I try to recycle the power and i leave it all night closed but this is not solve my problem . I attach the photo with the problem . Any ideas would be appreciated . Update (07/07/2018) Hi to all I reseat all the cables for the board to panel bust still the same issue .
I would suspect poor connections to the panel. Open up the TV and re-seat all of the cables. Start there and update this with the results.
@costasc that could be a main board issue as well as a panel issue. I would start with the main board, checking the t-con board as well. disconnect all teh wiring form the T-con board to the panel. then just connect one side. Let us know what it shows.
