Question about Norcent Technologies PT-4240HD 42 in. Plasma Television

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My plasma tv powers down

I turn power on shows green light for 3 seconds then turns red powers down what is the problem

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Hello, Power supply board just die.It can be dead at anytimes.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement. Hope this will help

Posted on Jun 02, 2010

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I have a 56 in hdtv Panasonic tv will not come on green light flashes 20 times then goes to red. Help, on disability fixed income & cant afford to get repair or new tv. Please help, as soon as poss


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I have a hitachi 55pma550 plasma tv.when I turn on the main switch red light comes on standby. But when I turn on tv the red red light on stand by turns green only for 10 seconds and goes red no picture...


It's most likely the smps. You'll first need to check voltages at CN63, pin #1-(+5v), 3-(+3.3v) and pin 8-(+6v) Also check CNPPS, pin 1-(+30v), 4-(+5v), 8-(+12v), 12-(+10v) absent these values and the power supply is clearly the problem.

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I have a 42" Maxent plasma tv. When turned on,


one or your tv mainboard was crashed, change it with new one

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Sony Plasma TV.


I have the same problem. since I have 3 of these TV's, I switched boards around, and I came to the conclution that is the power board. I will try to repair it, and I'll let you know the component that is bad. Gaston

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Unfortunately you need a repair man. The power supply is bad.

Nov 12, 2008 | Televison & Video

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I can't get my tv to turn on... nothing but blinking red light


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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1 Answer

Inability to turn on plasma screen


You have a power supply fault or one of the drive boards that drive the plasma screen is loading down the power supply. This power supply may be part of the entire main board. Good Luck

Mar 23, 2007 | Panasonic TH-42PWD7UY 42 in. EDTV-Ready...

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