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For that to happen you may have an electrical phase problem. Maybe you just overload When that happens will blow the fuses or the power supply. Replace the power supply Module
Sounds like electrolytic capacitor dried up needs curing, which is power on capacitor and left it absorb some moisture in humidity on power. Some time a few minutes, hard cases may take a few days.
HI:
This is a plasma unit and philips plasma's are nortorious for bad power supplys, your problem may very well be the power suppy in the television, it is possible you blew a low B+ fuse on the power supply. There is also a issue with the Y-sustain board failing in this model, If you open the back and looking at the unit from the rear the y board is on the left side of the unit and the PS is in the center. disconnect the Y-sustain power plug from the power supply and turn on the unit if the unit stays on with no red light then the y board is bad. it does the same then replace the Power Supply.
One simple solution may be to replace the power cable or the power strip that the TV is plugged in to. If you cannot get any power to the TV even after this step, it is most likely a motherboard or some sort of circuitry issue. Make sure you are using the physical buttons on the TV when trying to turn the TV on; leave the remote out of the equation. If it still does not come on, your TV may be far gone. HDTVs have a lifespan these days of anywhere between 3-5 years for plasma, 5-7 years for LCD, and the new LED tvs are supposed to last anywhere between 7-10 years.
Tries unplug,replug an hour later.Still no power than.Ur power board is dead.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.
Dont know if this will work for you or not, but my brother gave me his because of the same problem. It would power up and a green light would come on, then after 10 -15 seconds it would change to a red blinking light. I plugged a usb cable into the service port on the side and left the other end unplugged. Then plugged the tv back into the power. i took a small screwdriver and ran across the contacts in the end of the usb cable until both the red light and the green lights came on. I did this several times listening fot the clicking noises in the TV. after doing this for approx 20 seconds, i pressed the power button and the TV worked fine. 5 days now and no problems. Only thing I can think is I somehow reset the software and now it is working fine. Hope some of you can figure this out and give it a try. if the TV is just sitting, you have nothing to lose
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