99% sure it's going to be your power supply. If it's under warranty then by all means use it - if not, try another power supply or get your old one repaired. Most of the time it's a 1000mF@25v capacitor in the P/S that goes bad.
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if u can get it on for even a couple minutes check the sleep settings and if their on try turning them off see how that helps if not and your still under any kinda warranty call westing house and see how this works
The main board and or power supply is seeing a problem is shutting down the TV.
The cause for your issue could be the power supply, main board, and or the drive board(s) that drive the plasma screen. Sorry, but to trouble shoot that issue would require some TV tools and knowledge of electronics.
Perhaps the following can help you with a warranty repair.
1. If your TV was purchased from January 1 2008 to today---The TV does have a 1 year warranty on parts/ labor and a 2 year warranty on just the plasma screen.
2. If your TV was purchased before January 1 2008---The TV does have a 2 year warranty on parts/ labor and a 2 year warranty on just the plasma screen.
I hope this information has helped you.
Theres a short between the start-up processor signal on the interface board and power supply. It keeps sending the same start-byte over and over again to the power board. This could also be a DC high voltage shutdown on the power board its self. Now the tv is in protection mode to prevent further damage. Get it serviced at your local repair center. If its under warranty take it back.
Most likely the TV has a power supply related problem. It's possible that it maybe a bad capacitor or transformer on the power supply board. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board. But, I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route. If not under warranty and If you have some electronic experience, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20. And most cases the new part cost less than $15.
check the main fuse that should be close to where the power cord comes in,if you find the fuse blown it needs to be replaced with an exact replacement for AMPS rating and VOLTS rating as well as size,if the fuse is blown black we might have more problems ahead in the circuit and it will blow up again as soon as you plug the tv back in,if it blows again it will need a more involved repair,the problem could be in the primary side of the power supply....... Check horizontal output transistor.............
you have warranty go with it .......you can get it fixed ....
I have the same problem. My Akai 27" flat screen shuts off inconsistantly. Sometimes it will stay on for hours and then we have to turn in on every 2 minutes. It seems to be getting worse. Is there anyone who has found a way to fix this?