Question about Philips 50PF9431D Television

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Phillips IDTV 100hz

Keeps turning itself off and i have to unplug it and plug it back in

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Try to upgrade to the latest software. You can download the driver software from Philips's Website.

Posted on Jan 18, 2008

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Posted on Jan 02, 2017

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My Phillips plasma when turned on, turns itself off straight away. Any ideas? All the repair places are closed over the weekend. Now does not turn on at all.


Tries tv unplug,replug tv back about an hour later.By letting tv resetting itself back to the factory setting.Now the tv should be working again.If still have the same problems.The power supply board is the causes and the problems.That the board,where the power a/c cord plug into it.Try website like Ebay.com to guy a whole refurbish power supply board for the replacement.

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This is because the power switch operated the socket that your TV is plugged into. Unplug it and plug it in another socket that is not operated by a switch. Appliances should not be plugged into a socket operated by a switch because of the inconsistency of power to the socket. Lights are about the only thing that should be plugged in.

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1 Answer

Our phillips tv 100hz digital scan 29pt9418/79 won't power up


Yes,it about 90% of the times,it the power supply board.U can look around the power supply board for puff up bulge capacitors,replaced these caps will get ur power back.10% it ur Tuner signal board.If find no defective caps in ur power supply board.Tries websites Shopjimmy.com.Ebay.com to buy ethier refurbish power or tuner boards for the replacement.

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1 Answer

My Phillips Tv keeps turning itself off after around a minute,the power button remians on and green but no picture or sound. It is like the fuse keeps tripping. If you unplug the tv and switch it back on...


The main power supply is trying to fail. You might try giving us the model number since we can't guess exactly what kind of TV you have; LCD or plasma?? They suffer from some differing ills-

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It sounds like the controller is bad. Try unpluging the tv and restart after a couple minutes. What happens after you go from an HD product and switch to regular TV? There are codes to input via the remote to run diagnostics but I haven't had any luck as of yet. Could you check for a part on the back of your TV? Im looking for a part # for the metal part that screws into the back of the TV, that holds the tv on the stand. I have the stand but lost the bracket. Any help would be nice. Thank you, John

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Tv turning on and off itself


Try "hiding" the remote from the set so that the TV cannot "see" it. Hope this little trick helps...accordianman

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1 Answer

2 year old Phillips 42" Plasma TV won't turn on


Hi I had exactly the same problem, bought the above parts off ebay. The above solution worked and tv back to normal. the soldering is a bit tricky and there is a lot of screws holding the back on!

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