Thank you for posting your question on Just Answer! I will be happy to help you with this problem. Can you please give us some more information so I can better answer your questions.
-When it wont turn on, what does the light on the front of it do?
-How old is the unit?
Please give me this information and I will be happy to assist you further.
We have had the set for 6 years (it was delivered by Best Buy on 1/15/04).
The set turns on, but sometimes it then turns right back off. Sometimes it also turns on and off repeatedly by itself. Then sometimes it is just fine for a couple of weeks. The light turns on when it is on and turns off when it goes off. I don't think I can replicate it now for sure although I could try if that is necessary -- it is unpredictable.
I guess I am a little confused, are you saying that when you turn it on the power light comes on but no picture?
Sorry. When I turn the TV on myself (as opposed to its turning itself on when I am out of the room), the red light on the front blinks 11 times then stays off but the TV picture and audio come on and stay on (at least they did just now) and I can watch it fine for an indeterminate amount of time. But sometimes it just turns off by itself. Then when I try to turn it on again it may stay on or it may turn right off again and the pattern I turn it on it turns off repeats for awhile until I give up and shut off the power source to the TV.
Sometimes we are sleeping upstairs and it turns on by itself and wakes us up when we hear voices downstairs and we have to go down and turn it off.
Well first I must say that is quite strange! I have never seen it in a Sony, I have seen it in plenty of RCA's in my time but never a sony.
You definitely have a problem in the system control/micro circuit, this is the only thing that could turn the set on by itself, this could be something like a bad button, a leaky transistor or a bad micro. I would say this type of a repair could run you anywhere from $200-$400 depending on what is determined to be the problem, however before calling a repairman I would play with all the buttons on the tv itself. make sure that none are sticking and that they are all doing what they are supposed to, if this does not help then you will either need a new set or a repairman at this point, I am sorry to bring bad news.
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