Philips Magnavox Plasma TV went off.

Put new batterys in the remote,

I'd look for the manual and see what it says about that red light. I can't find squat for "Magnavox KM42010P".

Yes,make a noise to power up and turn off power only.But not in 30mins,with 5 or 6 mins

that is because plasma tvs have a limit on there screen life and if all is done all day for months and months was watching tv ,playing games then you will need a new tv plasmas **** you can get same quality out of a lcd flat panel and three time the screen life or you could spend anthor grand and have the solution replace and maybe the that part of the control board went out and you will spending about half of what you paid for it to fix thats why i have two lcds have not had one problem with them one 32 for my computer and a 42 for me to watch tv ov on play games with and both the same brand and i paid 1200 for both brand new

It is still possible the z sustain board is bad. or an x driver board.

power supply board - check the fuses first --- remove all cords and power cord -- wait one day then connect -- if this doesnt work -- you probably need a new power supply board without looking at it - can order online at partstore.com

I am a TV repair technician and what you are experiencing with your plasma and PS3 is a HDMI compatibility problem. The Philips plasma and the PS3 electronic handshaking (EDID) are not right. This happens alot with an older version of HDMI like 1.1(Philips Plasma) and a newer version of HDMI 1.3 (PS3). A tv firmware or PS3 firmware update will not resolve the problem. I would recommend using the HD component video cables and that should work just fine for playing High Definition BluRay movies.

you need to replace y-sustain board.

The problem is in your cable connection on the back of your monitor or Box. I had the same problem and solved it by reattaching the VGA cable that was loose.

U better have it checked by a qaulified tech