While you wait for answers, we may have found some information which could help you.
Click here for Philips TV BlinkingSound is going in and out on my TV?
Why when I power up, the green L.E.D. flashes on then off. ?
how can i fix this problem?
Why it goes on and off many times?
Take Child lock off a Philips TV?
phillips 42ta648bx led tv solarized screen?