Question about Panasonic VIERA TH-65PV500 65 in. Plasma Television

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Cable box displays channel but no picture

My Panasonic has been working fine for months - unfortunately while changing a DVD player setup I must have done something to my screen settings because now I can't get a picture for cable TV. Its a snow day today and everyone in my family is mad at me, so I need your help. I hooked my DVD properly which you would think earned me some credit but it didn't. Anyway, I'm using an HDMI cable and the TV is getting a signal because the channel shows up on the bottom of the screen - just no picture. Any idea what I screwed up?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

Shuttle83
  • 1139 Answers

SOURCE: HDMI Signal gone

The HDMI interface may have suffered a malfunction, this offten happens due to stray voltages on the ground plane. If you do not have electronics experience I would suggest taking the set to the shop and having it repaired

Posted on Sep 24, 2007

legna
  • 53 Answers

SOURCE: NO TV PICTURE

The best way is to contact your service provider and ask them to trouble shoot guide you, there should be a way to reset or diagnose the receiver or if you prefer go back to the place you bought it and ask for a replacement, You should still have the manufacturer's warranty, check that as well.

Posted on Dec 14, 2007

  • 39 Answers

SOURCE: Picture, No Sound from HDTV Box

CON-YOU'VE DIAGNOSED YOUR OWN REPAIR.GET A NEW CABLE BOX.JOE TV

Posted on Dec 17, 2007

  • 47 Answers

SOURCE: Can't play my PS3 through the Panasonic TH-42PZ800A

your HDMI output is bad

Posted on Jun 14, 2009

tvservice306
  • 458 Answers

SOURCE: Panasonic TH-46PZ85U Plasma TV

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.

Posted on Jan 27, 2010

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To your recording, based on your second posting (and would appreciate corrective information where applicable), your system is:
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