Picture works for a while than goes out, but the sounds stay on. I turn the TV off wait a minute, turn on, picture works than goes out again ??

Chances are your main board is defective and needs replacing

Ur tv now power on only have picture few mins,than dead,have sound only?Yes,than the 1 or 2 the long board call the LCD inverter boards are dead.The LCD inverter long boards help the LCD screen to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy 1 or 2 long LCD inverter boards for the replacement.

The light is blinking a code. The code will be a series of blinks, a pause and the blinks again. Phone Sony service and give them this code. They will be able to advise you as to the problem.

Could be the signal board has a bad cap, in this case it sounds like you are getting intermitten power to the inverters....when the tv goes down and of course you have audio....Shine a flashlight on to screen and see if you have a picture...look carefully. If this is the case..you have the above problem!

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Is there a "sleep" button on the TV Remote Control or the TV Menu?

Hello,
According the information I believe your backlight might went out. call 323-767-6030 I will go through with you for your tv.

Sounds like the CRTs are going into protective blanking due to the vertical output ic needing to be resolderd. Try resoldering the vertical IC that may possibly fix the issue.

The tv is shutting down because of a power problem. It could be the power transformer or a color gun overheating. Expect at least a couple of hundred dollars to fix it. Some shops will do house calls for around $65 and can diagnose the problem and give you an estimate. Usually they can just remove the board, take it to the shop and repair it, then reinstall it.

could be some bad solder connections on the crt socket or around the flyback area dealing with the brightness