Panasonic TH - Recent Questions, Troubleshooting & Support - Page 2

Can you see the TV's option menu?

I'd check your Panasonic user's manual, usually, there is a list of codes for "other" devices. There may also be a way to do an automatic upload of the Toshiba device's code if it is on and the right button on the Panasonic remote is pushed.

A guess would be you have some LED's in the panel that are going bad and its drawing to much current

check the 5v regulator or check if 110 volt regulator is working or the automatic blanking control ABL or switching jungle I.C not working.

Ive got bad news for you, about 90% of the time black horizontal lines are caused by the panel failing, your going to need a new TV. You can try replacing the timing board but the chances of it fixing it are slim..

First step check fuses then if they are bad replace them, also check the voltages on the various test points on the power board

Are you using a component video connection (3 wires for the video, colored red, green, and blue)? It sounds as though you are, but correct me if you are using a different connection as the steps will be different. If so, ensure that they are all connected. You can also unplug one at a time while watching the picture. If the colors DON'T change when unplugging any individual wire, then check that wire from end to end looking for cuts/corrosion/etc... If necessary, replace the cable. Also make sure that they're plugged in to the right jacks, they should be color coded. NOTE: there is a red jack for the video AND for the audio. Check carefully that these aren't mixed up.