Screen right side is black for 40"sony lcd tv

If it exactly half of the screen and you mean absolutely no picture, then it is the t-con board. small board at the top center or bottom center with a flat ribbon cable giong in, it is covered with a metal sheild.and if you remove the shield you can see 2 ribbon cables comming out the top. one for each side of the pix. dont **** the shield off as some times the two ribbons at the top are fed througha slot in the shield and if you cut one of these, its game over.getting a new t-con is hit or miss. "shop jimmy" is a good place to look

Hi,

This kind of symptoms is an indication of faulty T-con board. This board has a connector to the main board and to the panel. These connectors must be pull-out, inspect, and then re-insert and ensure that they are properly seat-in to isolate loose connection from fault. If the symptoms still persist, you have to replace this board to resolve the problem.

Opening the back cover will void the warranty. If your unit is still under warranty period, avail it because the manufacturer will fix it fro free.

Hope I helped you.
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