Question about Philips 50PF7220A Television
We have the above model plasma tv. It is just about 2 years old with an expired warranty. Yesterday when we turned the tv on we got sound but no picture and within seconds it shut itself off. The green light on the front switched to red and blinks 7 times. We called tech and they told us to unplug it for a bit and then turn it back on which we did but it continues to do the same thing. Has anyone had this problem and if so how big of a problem is it? From what I can find on the internet it may be that there is a short somewhere in the set which causes it to heat up and shut off to prevent further damage.
I had the exact same problem. Called Philips & they just gave me number to repair service but no real help. Tech came & knew exactly what problem was within seconds, literally. Removed rear panel & disconnected & reconnected wiring to the lower buffer board. He said connection was just loose & needed to be tightend and cleaned with something dry like paper towel or eraser. I could've done it myself if I knew anything about the inside of tv's. Either way here's where the buffer boards are. After removing rear panel, there were 2 green HORIZONTAL boards near the side with buttons. One UPPER, one LOWER. Look exactly the same. Besides my entire tv going out at times, only the LOWER half would turn off at times as well. So the LOWER board had the loose connection. Either way that fixed the problem though the guy mentioned it could've potentially been something called a sustain board. I'm just glad my tv works again. I've only had it for 2 years now.
Posted on Sep 21, 2008
3 things will cause this. power supply capacitors can dry out, which wont allow the set to switch on. a faulty x,y,z, sustain board failure is the next. also the display itself may have an internal short circuit.
Posted on Jul 11, 2008
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Posted on Jan 02, 2017
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