TV will not stay on. It will turn on and after a

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It could be the color wheel in the TV that you are hearing. There is a color wheel that spins in order for you TV to display colors and if it is struggling to stay at the right speed, it could cause the sound that you are hearing.

The fans also make some sound as when they spin and will remain on for a few minutes after the TV is turned off in order to cool the TV.

Bad caps in the power supply must be replaced .

tv is in shut down.could be several things.call a repairman.

I have had the same problem with every Phillips with which I have had any experience. Service required, possible DOA.

ctgarden girl, my set does the EXACT same thing! I too wondered if a cold room was an issue. The set is only 4 years old, and I didn't have this problem in my old place where the room was a lot warmer.

Can someone please help?!?!?!?

somone with some sort of tv knowledge told me that sometimes people dont realize t but moisture builds up inside and it needs to be dried back out

In electronics dust has nothing to do. cleaning will not solve your problem your problem is due to trouble in vertical section. mostly it is due to electrolytic capacitor in vertical section is defective.it is common problem. also check supply to vertical section. "THE SCREEN SHRINKS TOWARDS THE TOP OF THE SCREEN FOR A FEW SECONDS BEFORE THE PICTURE TURNS UPSIDEDOWN THEN TURNS BLACK." is called fold over. regards thanks