Question about Panasonic TH-50PX50U 50 in. Plasma HDTV

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HDMI inputs do not work on my Panasonic Plasma TV

I purchased a Panasonic Plasma TV (model # TH-50PV80H) around a month ago. I connected a DVD player (capable of HD upscaling), a multi-media PC and a PlayStation 3 via HDMI cables and everything worked great. After 2 weeks, I could no longer connect the PC via the HDMI - the screen simply went black (but I could connect it using the VGA input). The DVD player and PlayStation continue to work for a few more days and now I can't get them to work either. At best (and after the TV's been sitting idle for a few hours), I can get a picture for a 15 - 30min, then the screen goes black again.

First, I assume that I'm dealing with some sort of hardware problem - correct? Secondly, is it possible that the PC is the cause of the problem? I've been reading on-line that you can do damage to I/O board due to the fact that the native resolution on the TV is different from a PC.

I'm hoping that there's some kind of easy fix for this since I purchased the TV in Canada before moving to Europe and I don't know if my warranty is valid (fyi, the TV has a UK plug and is fully PAL and NTSC compatible).

Thanks in advance for any help you can pass along!

Posted by on

  • bdh0624 Jan 02, 2009

    Update to what's written above ... I've been able to connect my PS3 to
    the HDMI input for over three hours this morning (and counting), yet
    last night it would only work for 15min before the screen went black.
    Is this consistent with a faulty signal card?



    Thanks for the quick response Drumbanger (I'm not sure how to respond to you directly, so I'm adding this comment to your proposed solution).

    FYI, the TV model is actually a TH-50PV80H, not a TH-50PX50U (but I'm sure this doesn't really matter).


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This sounds like the signel board has went out and will need replaced! I checked an panasonic tells me that your warrenty is still good even if you move!

Posted on Jan 01, 2009

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This is a failure in the TV input circuit. The buffer IC used in the HDMI input circuit is failing for some reason. It could be the supply voltage for the IC has an intermittent component causing it to fail after it has been working for a while, or it could be the IC itself breaking down after it gets hot, or maybe even a bad solder connection failing at intermittantly. It must be checked by a technician with the proper tools to isolate the problem with any certainty. Anything else at this point is just guess work. From your description of the problem it is very unlikely to be a menu setting or a problem that resetting the unit will fix.

Posted on Feb 15, 2009

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Definately a hardware problem, however it is with the inputs of the TV. This is not a end-user fix. Contact panasonic. your warranty should still be honored if there are panasonic authorized repair centers in the country you now live in.

Thanks for using FixYa - a FixYa rating is appreciated!!

Posted on Feb 15, 2009

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First of all check out the cables are the proper.also replace the cable and check or check out any other device with the cables and confirm.also it can be the loose connection issue internally.jusdt get the system check withy a multi meter to locate the fault.

Posted on Feb 15, 2009

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Check if the TV has a configuration menu for HDMI devices.

Try also unplugging al devices from power and plugging them back with HDMI cable in , sometimes this can solve the problem.

Posted on Feb 15, 2009

  • Ginko
    Ginko Feb 15, 2009

    If this does not work, there is a small HDMI input board (signal board ) that sometimes gets damaged when you connect the HDMI cable with devices on.

    The most likely is a setting problem, a wrong resolution on the receiver/dvd , or the need for a better HDMI cable.

    In some case you get a damaged HDMI input board.

    Let me know how it goes.

    Thanks


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SOURCE: we are in Europe and

Yes. Its PAL System capable.thanks

Posted on Jan 19, 2011

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