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Panasonic TH42PA20 42" Plasma TV. Sometimes the picture goes out and the power on LED is stay on. We have to unplug the power cord in-order to get the TV working.

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I advise you Sir ,to Change The Screen

Posted on Sep 04, 2008

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Posted on Jan 02, 2017

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I have a 50 HItachi Plasma tv, after awhile the picture goes black but the sound is ok. It won't come back on until we unplug the tv then plug it back up. Sometimes the tv will stay on for an hour...


Your fluorescent tube or the board driving it is bad. Have the tube checked out before you spend a lot of money on a circuit board, this is not something you should do yourself especially if you are not a TV service technician.

Feb 02, 2018 | Hitachi P50H401 50 in. Plasma HDTV

1 Answer

Panasonic Plasma - turns on, but stays blank.


Your TV probably has power supply trouble.

Jan 16, 2014 | Panasonic Televison & Video

1 Answer

Panasonic plasma tv turns on but no picture or sound


Same issue with - Panasonic TH-50PX70A , power UP with red standby, then power ON by remote - only Gives GREEN led blinking 35-40 times, followed by solid green led with no no picture no sound.
>> Solution; unplug Plasma from AC 10-15min, then plug in & power on to Red standby led,, At this point - Power ON tv while holding down both -Volume Down and F (function Select) buttons (front panel door) at the same time turns picture ON,all ok.

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Jul 25, 2011 | Panasonic Viera TH-50PX80U Plasma TV

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My panasonic model #TH-50PX75U wont turn on, it powers up but the led light stay on not blinks any time.


Unplug the power cord. Press and hold the power button for 30 seconds, repeat. Plug it back in and try to turn it on.
If this doesn't work, it would be time to call in a repair tech. Is the TV still under warranty? Extended warranty?

Apr 13, 2011 | Panasonic TH-50PX75U Plasma HDTV

1 Answer

No picture on my philips 42PF7321D/37


Bad caps in the power supply must be replaced .

Jul 21, 2009 | Philips 42PF7320A 42 in. Plasma HDTV

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Panasonic plasma


If you open the back,look at the can shaped items.If any of them have the tops bulged out,they need to be replaced.This should solve your picture problem,unless there is something else wrong.What is happening,is they are heating up,and the picture goes out.I bet the longer you have the TV off,the longer it stays on?Hope this helps.Thank You very much! Tyler

Apr 06, 2008 | Panasonic TH-42PX75U 42 in. Plasma...

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