20 Most Recent Panasonic TH-50PX75U Plasma HDTV Questions & Answers

you have tripped the tv's safety power down feature, try unplugging the tv for 15 mins to an hour then try to turn it back on, if it still ceases to function, the tv will need servicing.

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https://www.manualslib.com/manual/507050/Panasonic-Th-50px75u.html

If the buttons on the TV -and- the buttons on the remote don't work, then there's definitely something wonky with the TV. The good news is that the power works and the picture looks good. That rules out a bunch of things. If you don't mind tinkering, replacing circuit boards on TVs is pretty straight-forward -- just take off the back, unscrew the offending board and replace it. You'll have to do a little research to narrow down to the right board to replace -- it might be this key controller board: http://www.shopjimmy.com/panasonic-tnpa4280s-gs-board.htm

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electro-medical.blogspot.com/

Well, first your model number is the 42 inch, but I digress...

I had a similar problem with a Viewsonic 27 inch, with the blinking power light on a failed power-up. It turned out that replacing the power transformer was the ticket. However, as I have the 50 inch Panasonic plasma, I know that the transformer is built into the set itself. I'd still suggest that this is what needs replacing though, as this is different from a set being on but having no picture.

I had same problem, called visionquest tech support for how to reset the tv:

Using the remote, press source then 2580.
A menu should appear, go to other settings then choose restore default. Select yes.

It worked for me - hope it does for you too!

Here is a link for english and spanish manuals in pdf format.http://shop.panasonic.com/shop/model/TH-50PX75U?t=manuals&support#tabs

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

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