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Viera plasma 46" won't turn on when connected to computer

I have my computer connected (dvi to hdmi) to my tv. Recently I upgraded my computer to an amd dual core and a geforce 6500 video card. Now the tv won't turn on (flashing led light - 3 times). It will turn on when I disconnect the hdmi from the back of the TV, or disconnect the DVI from the back of the computer. Weird thing is, once the TV is on, I can connect it to the computer and use it just fine. Any ideas?

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  • dsmith41 Dec 08, 2008

    Thanks for the note. Just in case anyone else has this problem, here is the reply from Panasonic:

    Thank
    you for your e-mail. Our factory
    engineers have advised that the HDMI 1 & HDMI 2 inputs at the rear, unlike
    the HDMI 3 input, do not have the equalizer/buffer circuit between the HDMI
    input and the HDMI receiver. They are dedicated HDMI ports for Audio/Video
    components (BluRay, Satellite boxes, Cable
    boxes, PVR). Without the equalizer/buffer circuit, the TV will not display
    picture and/or sound. One can either use the HDMI 3 input or there is an
    Extender Boost adaptor available from GE, model 22703, that one can connect
    between the rear HDMI input and a PC, using another HDMI cable (the adaptor is
    female on both ends).



  • tdagesse Dec 12, 2008

    Thanks! I was having the same problem and it was driving me crazy!

    Did you buy that part from GE or did do you use HDMI 3?

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Change the refresh rate on the comp.

Posted on Dec 06, 2008

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What kind of wire do I need to connect my samsung laptop to panasonic viera hd 3d plasma tv?


Most TVs will have HDMI and RCA component and composite jacks. Some TVs will also have a VGA port. Your laptop will have a VGA port. (If the laptop is fairly new, it may also have an HDMI port.)

Not all TVs will support an HDMI signal from a computer, so the VGA signal is often better. However, that limits you to SD (anything with HDCP will fail.)

Very few TVs ship with the HDMI or component cables. However, there are some vendors who do package the HDMI cable with their TV. Without knowing which exact model of TV and laptop, I can only make a few suggestions. I know that the TCP42ST30 (Plasma 42") doesn't have a VGA port.

Look at your laptop for any external monitor port. VGA ports are generally blue female ports with 15 holes (D-Sub). If your TV has a matching VGA port, get a standard VGA monitor cable.

If you have the VGA port on the laptop but not on the TV, you can try a converting from VGA to HDMI. (You may need a DVI to VGA adapter and either a DVI to HDMI cable or a DVI to HDMI adapter.) Note: this gives an analog signal (RGB format) to the TV. You'll also need to make sure that your VGA port is active (in the BIOS for some computers) and then set your computer to send the signal to the external monitor. It is best to turn off both the computer and the TV before connecting the two. Then turn on the TV and set it to the correct input before turning on the computer. (In Windows 7, I set the video signal for the external monitor by right clicking on the desktop and selecting Graphics Properties. Set the signal to the external monitor and click Apply. Then click OK (in the external monitor's screen).)

If this doesn't work, you need a VGA to component video converter. (Not a VGA to component video cable - those are for projectors that read the RGB signal.) See http://www.ramelectronics.net/audio-video/video-converters/vga-rgb-hv-to-component-video/c10000-c11200-c11215-p1.html .

Some laptops come with an HDMI, mini-HDMI or a DisplayPort option. For the latter two, you will need the appropriate cable with that end and the HDMI connector on the other. Then connect the TV and the computer as described above. (Note: my TVs accept a computer signal at the HDMI port labeled HDMI/DVI. However, you need to make sure that your TV understands this signal. It isn't the same format as that from a set-top box. My laptop has VGA and HDMI out; the desktops have VGA, DVI and HDMI (on one).)

If you add a comment with the model of your TV and laptop, I'll be glad to give you more specific options to connect the TV and the computer.

I hope this helps.

Cindy Wells
(A DVI port is a digital video out option with ~21 pins and is usually white.)

Feb 03, 2012 | Panasonic VIERA Flat Panel Televisions

1 Answer

Is the 42" philip plasma


If you really want, you can use an old CRT TV as a monitor provided you get it connected.... so your plasma... YES. If your PC has a DVI port, you could use a DVI - HDMI cable to connect. If your PC does NOT have a DVI port, you could install a video card that does... better yet, get a video card that has a HDMI port. This way, you'll only need a HDMI cable to connect the PC to the TV for audio and video.

Aug 05, 2011 | Flat Panel Televisions

1 Answer

My sansung pn50a460s4dxza says it is 3d ready. how can i use this feature on my tv.


Your tv is a 2008 model, legacy 3d tv and requires a lot more than a current 3d HDTV does to view 3d. Today with a current 3d HDTV, Normally you only need a 3d source like a 3d Bluray movie and 3d glasses from Samsung and a HDMI cable connection from bluray player to HDTV. See below for your TV. You need a PC and IR emitter and Samsung 3d glasses plus user selected options on the tv.
Samsung 3-D Ready HDTV How do Samsung 3-D Ready HDTVs work?
Samsung 3-D Ready HDTVs are enabled by Digital Light Processing (DLP(R)) or Plasma Display Panel (PDP) engines that are capable of very fast refresh rates (120Hz). The inherent speed of these display technologies enables high quality stereoscopic 3-D by alternatively displaying left and right eye images. The display is synchronised with 3-D shutter glasses to provide the observer with a vivid perception of depth.
How do I connect my PC to a Samsung 3-D Ready HDTV?
The DVI output from the PC's graphics card must be connected to the TV's 3-D compatible HDMI port using a DVI-to-HDMI cable (or a HDMI cable plus a DVI to HDMI adaptor).
Alternatively, some newer graphics cards have a HDMI port instead of a DVI port. In this case, simply use a HDMI cable to connect the PC directly to the TV.
On all models, the 3-D compatible HDMI port is identified by the letters "DVI". (eg, "HDMI 3/DVI IN" or "HDMI 1/DVI IN")
What other equipment do I need to enjoy 3-D on my 3-D Ready HDTV?
  • Windows PC with DVI output
  • Compatible 3-D Shutter glasses and IR emitter with VESA compatible sync connector
How do I connect the IR emitter to the 3-D TV to support wireless 3-D shutter glasses?
The IR emitter should be connected to the "3D SYNC OUT" socket. The emitter should be placed on top of the TV with the LEDs facing towards the room. How do I turn the TV into 3-D mode?
Ensure that the TV source is set to "HDMI 3/DVI" (or "HDMI 1/DVI" for 720p models).
Plasma HDTVs Press the Tools button and select 3D Effect. Update from Off to Mode1.

May 04, 2011 | Samsung PN50C430 50Inch 720p Plasma HDTV...

2 Answers

Can i connect my panasonic viera th-42px8ou plasma tv,to my vista desk top? my tv has hdmi on it,my vista tower also says it has 1 hdmi connector on the back of it


You can buy an HDMI to DVI adapter (around 20$) to connect your HDMI computer cable to your TV. You will need separates audios cables, right and left, to bring the sound to the TV.

Dec 28, 2010 | Panasonic Viera TH-42PX80U Plasma TV

1 Answer

I am trying to connect my macbook pro computer to my Panasonic Viera using a VGA > HDMI converter, connected through to the HDMI port on the TV. The TV screen remains black on the HDMI setting. I...


On the MacBook, check the Displays pane in System Preferences to make sure the settings for the external monitor are correct. It's possible that the system is not recognizing the adapter or it has the wrong resolution setting, so it's not sending out any signal that the adapter can use.

Many of the better DVD players and high-end video game consoles use HDMI. You can use one of those as a test signal generator to check the TV.

You may get better results if you use a DVI-HDMI converter, although you would need to get the DisplayPort to DVI cable. This will avoid converting to analog VGA signals and back to digital again.

Oct 13, 2010 | Panasonic TH-42PD50U 42 in. Plasma EDTV

1 Answer

Panasonic TH-46PZ85U Plasma TV All 3 HDMI was working fine with cable box, PS3, XBOX360. I used to connect my pc to the tv with a dvi-hdmi cable, but recently unplugged it. So I tried to plug in the same...


Symptom:
TV shuts off unless all the input (phono and HDMI) cables are disconnected. The
symptom may be intermittent.
Cause:
There is an abnormal AC voltage entering the TV from one of the input cables or AC
outlet.
Remedy:
Follow the Testing procedure to determine if there is a problem external to the product.

Concept
Constant symptom
If the TV no longer shuts off when all input cables are disconnected, then one of the
input cables is introducing abnormal voltages into the TV. Panasonic Plasma TV sets
have 3 wire AC plugs.
As a result, abnormal voltages introduced into this TV will cause the TV to shut off for
protection.
Intermittent symptom
If the abnormal input voltage is borderline (marginal), the TV shut off symptom may be
intermittent. However the cause may still be detectable with a voltmeter.
Protection Proof:
Release the protect mode - the TV has to be unplugged to reset this protection circuit.

Threats from the HDMI input:
Excessive voltage from an HDMI cable connected product will activate the Plasma TV’s
protection circuitry. Placing an isolating / buffering connector (sometimes called a voltage
conditioner) between the TV and the HDMI input cable often solves the problem.
Testing -
Unplug all the HDMI inputs from the TV. Turn on the TV. Plug in the HDMI inputs one at a
time. The cable that causes the TV to enter the protection state is connected to the product
that has the excessive voltage (and signal). Avoid connecting this product until an isolating
connector is found.

Jan 27, 2010 | Panasonic Viera TH-46PZ85U Plasma TV

1 Answer

Panasonic Viera 42" TV won't tun on


This problem happens when you connect a DVI-HDMI input to the back of the set. It can happen other ways too though. Press and hold your power button, which will reset the unit to it's factory defaults, and should return it to normal use.

Mar 03, 2009 | Panasonic Viera TH-42PZ80U Plasma TV

2 Answers

Plasma, panasonic viera


I had a similar problem with my Panasonic Viera 46 " 80U. I believe it was caused by HDMI ideoscyracies. When I turned off TV before shutting down the HDMI connected with my computer. It froze up. I could not get the TV to reboot, even if I pulled the plug, until I reconnected the HDMI to my computer and when I shut the computer down properly, something in the HDMI communicated to and released the TV from the freeze. At least that seemed to be the answer.

Let me know if this makes sense or if anyone experienced something similar.

Jan 15, 2009 | Panasonic Viera TH-50PZ80U Plasma TV

1 Answer

Is there someway to hook up our Hitachi 42HDS69 to our laptop


Your computer should have a DVI port to make this possible since your TV dont have a VGA port. If your computer have a DVI port then an HDMI/DVI cable is all you need. This allows you to connect you computer or laptop to you tv through the HDMI connection on your tv.

Dec 31, 2008 | Hitachi 42HDS69 42 in. Plasma Television

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