Question about Panasonic TH-37PX60U 37 in. Plasma HDTV

5 Answers

Panasonic Plasma as PC Monitor using HDMI

I am trying to connect my PC to my Panasonic Plasma.

I have the following eqipment:
Video Card = NVIDIA Geforce 9800GTX+
Panasonic Plasma = TH-50PZ850U

I can connect through the analog PC input on the TV. But, I want to use an HDMI connection to get the best resolution. The Geforce 9800GTX+ has DVI out, so I have a DVI to HDMI connector and plug in HDMI to the TV.

Here's the sequence of events that's happening:
1. Conncect PC (DVI to analog adapter) to TV PC analog connector.
2. Everything works fine.
3. Enable the Geforce video card.
4. Reboot to enable viseo card, still using the analog connection.
5. Everything works fine.
6. Shut down.
7. Change connection to DVI/HDMI.
8. System boots up OK. Then, even if I make no changes to any settings:
9. Next time the system boots up, the screen is black.

I've tried changing the video card settings. I've made sure the refresh rate is at 60Hz (which is what Panasonic says the TV refresh rate is). I've connected my TV to a LAN line and updated the software. The video card software is also up to date.

I don't know if it's an issue with the TV or the video card.

Posted by on

  • mdejongh Jan 04, 2009

    Actually, I can't seem to repeat these steps. I thought I could, but I tried today and I can't.



    I've connected the following ways:

    1. TV only with analog connection...always OK

    2. TV only with HDMI connection...today never OK, boots OK into safe mode.

    3. Separate monitor from my other computer...always OK

    4. Separate monitor plus TV HDMI...monitor OK, TV no good

    5. Separate monitor plus TV analog connection...both OK



    My TV manual lists all the HDMI possible connections, for example:

    1125 (1080) / 60p with Horiz freq 67.50 and Vert freq 60.00

    but, I don't know what that means relative to the possible video card settings.

    The TV manual also lists the analog PC connections, for example:

    1280 x 1024 @ 60 with Horix freq 63.98 and Vert freq 60.02

    I can understand this relative to the video card settings, but like

    I said, the analog PC connection works fine.



  • mdejongh Jan 07, 2009

    I got it! The DVI/HDMI adapter had a broken pin.

    It must've been loose at first, that's why sometimes it worked and sometimes it didn't. Then it must've finally broke and that's when I couldn't get anything to work.

    Thanks for your help.

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5 Answers

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HI

Use your TV's PC input with DVI or RGB. 

Connecting a computer using HDMI is basically the same thing as connecting it through a yellow composite (RCA) cable. 

The TV does not seem to be able to grab the sync information from the computer. In other words, the computer will just detect no monitor, and won't let you change resolution from 640x480 or 800x600. 

Posted on Jan 02, 2009

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  • Master
  • 6,966 Answers

Hi and welcome to FixYa,

Have you tried connecting to another HDMI on the Panasonic, specifically the front? An HDMI input, an AV input, and an SD card slot are hidden beneath a door on the front panel.

Good luck and Thank you for using FixYa. Happy New Year.

Posted on Jan 02, 2009

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  • Expert
  • 163 Answers

K...
go to the link to know how to use your tv as a computer monitor --
http://chris.pirillo.com/2007/09/22/using-hdtv-as-pc-monitor/

Posted on Jan 02, 2009

  • ronny2051 Jan 02, 2009

    or try the blow link to know how to connect plasma TV to a computer (with complet figure diagrams)---

    http://www2.panasonic.com/consumer-elect...

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  • Master
  • 837 Answers

Shutdown, connect BOTH connections to the tv (pc & hdmi)

Now when you startup you will have video .. then in the control panel for the Nvidia card you will see that it should show both connections .. switch to the hdmi connection and you "should" have video on the TV

Posted on Jan 02, 2009

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  • Panasonic Master
  • 13,433 Answers

If you can repeat the steps over and over again it means the issue is in your computer settings, seems they won't stay the way you want them to.

disconnect any extra cables from the computer. do you have it connected to anything else but the tv?

Posted on Jan 02, 2009

  • Ekse Jan 04, 2009

    I suspect its a problem with the nvidia drivers, you could try updateing the drivers from nvidia.com. Also if you look into the nvidia control panel, look into the video & televison look at the change the signal or HD format.

    the settings seem to have a mind of their own at sometimes (in my own experience), try selecting another signal format.

    let me know if it helps.


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