Sony tv no picture has sound

@megh27

disconnect all inputs. disconnect the power cord. Hold the power button depressed for about a minute, then connect one video source. Try something like a game console or a DVD player (just in case the issue comes from your DVR box).Right now it sounds like it could be a backlight issue as well as a video issue, With the TV on and sound working, shine a flashlight at an angle(in a darkened room) against the screen. If you can make out shapes and silhouettes, it is a backlight issue. Could be a bad backlight array or bad power board. If you do not see anything it could be a bad main board or T-con board. If that does not work you may have to replace the back on your TV and check a few things. You will need a meter for that and it will help if you post some good pictures of your circuit boards with your question. Use this guide Adding images to an existing question for that