Question about Panasonic VIERA TH-42PX80B 42 in. Plasma TV
I have a Panasonic TH-42PX80B plasma tv - as of about 2 weeks ago, the HDMI ports/output has stopped working - when switch to either of the HDMI's, it's as though the TV doesn't know about the device...screen goes black and never seems to 'detect' either the Sky box, or the xbox360. Normal TV is fine and connecting the PC (via VGA input) is fine. I have run the self-check test, and it would appear to be fine. Can anyone help?
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Posted on Jan 02, 2017
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
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.
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
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.
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.
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
SOURCE: I have Panasonic th42 plasma.i m playing xbox360 for a year on hdmi port 1 .but 1 day when I turn on my TV than my Xbox the screen is showing black than change the port to 2 than port to 3 same proble
It sounds like you did some good testing by taking your xbox to a friend's home and trying it with his TV and HDMI input. You can try a reset on your Panasonic TV and see if that restores the HDMI input functions. Note this will erase your programmed TV channels so you'd need to re-enter those.
Posted on Mar 21, 2015
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