I have the exact same problem with my 2004 Trinitron. Every time you turn it on it blinks non-stop for about 5 minutes and then finally the picture comes on. Now.......the tv blinks frequently making it impossible to watch tv. Called a tv service repair man and he said it was the picture tube and that it was going bad. He promised that a good dusty off ($119.00 later) would fix the problem for the time being but eventually we would definately need a new tv. I have bought many items from Sony so this is a huge let down.

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