Panasonic TH-C42HD18 42 In. Plasma TV inputs not working

HI Ana,
Please check the input connections properly, change the input cord. If it does not help, you need to consult the service center or some qualified technician. Good luck.

Many times a computer's post screens will not show up a TV set, and once the computer itself has loaded the drivers and settings, the set may need to be shut off and turned back on for the HDNI or PC signal to be detected.

It is also possible the settings you selected for display properties cannot be displayed on the TV.

As far as the component video signal, are the connections correct? Sometimes people mistake the composite red, white and yellow for the composite system that divides the red, blue and green video signals.

While also possible, but rare- there may be poorly soldered connections on the "A&D" board (logic board) .

Most likelly it is your DVR that has a problem. Their are a lot of issues with those DVR's from the cable or satellite companies. I would recomend swapping it out.

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.

Reset ur audio setting back to factory setting.Should solved this probleems.

Main board issue.

I just bought a samsung BD-P4600 and I tried to connect with a Philips Plasma TV. What channel do I need to put it on for it to show?

Try all of your HDMI inputs, one may be rated at the correct voltage to be able to display the video. The offical part that Panasonic was giving for this was PDPHDMIKIT, its basically a HDMI extender that regulates the voltage. The part is still available online, try partstore.com or andrews-electronics.

If it was a setting on the television, then the cable info would also be affected. Try a reset on your cable box, as the cable info is generated within the box from the data stream, whereas the picture is streamed from the provider.

If the reset doesn't work, it's time to call the cable company - it's not a fault with your telly.

Try to open the back cover and remove the SD card cable from the connector.