Question about Panasonic TH-50PHD7UY 50 in. HD-Ready Plasma Television

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New TV - no picture at all

I'm installing my father-in-law's TV. We've checked that the hook up is correct, gotten the right adapters, but still have no picture at all on the TV - not even white noise. Just blankness and a buzzing sound. The TV is a Panasonic Plasma flat screen, model #TH-37PH9UK. We have the cable box hooked directly into the TV using the red and white audio cables, and an S video cable (we've also tried to use a Coax, and the red, white and yellow all together - still the same problem.) Panasonic customer support is now closed. Please help!!! Thanks, Brenna

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5 Suggested Answers

  • 864 Answers

SOURCE: I have a Panasonic TH-42PWD7UY Plasma screen TV.

See page 16+ of this:

Posted on Jul 18, 2009

  • 1614 Answers

SOURCE: Panasonic Plasma Monitor TH-42PWD7B - Convert to TV screen?

hi yvonne not sure if you sorted this but using this lead should get you sorted

the phono blugs ae used for audio and bnc plugs on the back of your panny are for the video

Posted on Oct 28, 2009

  • 458 Answers

SOURCE: Panasonic TH-46PZ85U Plasma TV

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

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
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.

Posted on Jan 27, 2010

  • 11800 Answers

SOURCE: My Panasonic Viera 50" 1080i

The Panasonic doesn't detect the presence of the signal on the antenna input so it just skips it. shut down the player and turn the cable box on before attempting to switch sources.
But why aren't you using the Composite RCA connection on the cable box ? Not only you would get a much better image but the tv would detect that change in the AV source and should switch by itself. If it doesn't then the control processor is faulty and the entire mainboard will will have to be replaced

Posted on Nov 05, 2010

  • 85 Answers

SOURCE: trying to hook up panasonic veira flat screen tv

If the red, white and yellow wires you are referring to are coming from another video source like a DVD player or cable box, attach them to the video 1 inputs red, white and yellow connectors; right below component in.

Please rate this answer if I was able to help.


Posted on Mar 07, 2011

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