Hello everyone,
I've been working on a Sony KDL-52W5100 that has a seemingly randomly occurring issue with vertical lines on the screen. These line span across the entire panel depending on what is being displayed, they aren't limited to just one area. The weird thing is, sometimes the TV will power on and display a perfect picture. When working, it will run for hours with no issues. Other times, the screen will be distorted from the second it powers on. When the lines are present you can sometimes hear a high pitched whine.
I tried disconnecting the cables that connect the tcon to the LCD panel one at a time and I get mixed results. Sometimes half of the screen is black while the other half displays a normal picture, as expected. Other times one half of the display has the vertical lines and the other half is white.
At first I suspected the TCON, but now I'm wondering if maybe theres a short in the panel that's causing the issues? The thing I don't understand is why the problem only appears some of the time - the TV will run hours with a perfect picture, or only a few minutes before the lines appear.
I've uploaded pictures showing the progression from a good picture to the vertical lines... as well as each tcon cable disconnected.
I've been working on a Sony KDL-52W5100 that has a seemingly randomly occurring issue with vertical lines on the screen. These line span across the entire panel depending on what is being displayed, they aren't limited to just one area. The weird thing is, sometimes the TV will power on and display a perfect picture. When working, it will run for hours with no issues. Other times, the screen will be distorted from the second it powers on. When the lines are present you can sometimes hear a high pitched whine.
I tried disconnecting the cables that connect the tcon to the LCD panel one at a time and I get mixed results. Sometimes half of the screen is black while the other half displays a normal picture, as expected. Other times one half of the display has the vertical lines and the other half is white.
At first I suspected the TCON, but now I'm wondering if maybe theres a short in the panel that's causing the issues? The thing I don't understand is why the problem only appears some of the time - the TV will run hours with a perfect picture, or only a few minutes before the lines appear.
I've uploaded pictures showing the progression from a good picture to the vertical lines... as well as each tcon cable disconnected.
Comment