I own panasonic th-42px500 flat screen tv. This week for no reason it displays " no channel available" when I try to access cable channels yet it still works if I play a dvd movie. How can I fix this problem?we've had this tv for just over one year. it was manufactured in Nov.2005
Unplug it for 10 secs and plug it back in then wait 10 more seconds and turn it on with the on/off switch. Unplugging makes it reload the firmware, but on/off does not. If that doesn't work try a factory reset. For my Panasonic you do this. Open front door to get at the buttons. Turn TV off. Press and hold the OK button and at the same time press and HOLD the on/off switch for about 3 secs. You should get a self check screen that will last a little while and then the TV will go to the menu screen.
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RGB is for a computer screen display signal and has nothing to do with TV display of channels. You must have a Component hook up, it is a yellow cable, a red and a white one. Yellow is video signal, the red and white are sound.
Try relocating the location of your antenna or changing the direction it is pointed. Once this is changed, select PROGRAM CHANNEL from the SETUP menu and set ANT IN to Antenna before selecting Auto to start the programming process.
The cable box will only be needed if you're going to subscribe to receive digital channels. If not, the plasma should be able to receive all the analog channels available with your current subscription.
Well make sure it's on the right source, I have a 50 inch Samsung and when you're on the wrong channel it'll read no signal and you can't do anything. So make sure you have cable hooked up right and make sure it's on the right source or video channel first. I don't know but this might help.