Try hitting the video button on the Dish remote control. 
The RF connector is the worst choice in getting the signal to the TV. There is no stereo modulator, so any audio going to your TV will be mono.
I have the composite output of my 501 going to a switchbox (which switches between my 501, DVD player, and VCR). Unless there is a firmware update or a front panel reset, there is always a signal going out to the TV, even if it's just a blank signal.
The best connector, of course, is a S-Video connector.
The RF connector is the worst choice in getting the signal to the TV. There is no stereo modulator, so any audio going to your TV will be mono.
I have the composite output of my 501 going to a switchbox (which switches between my 501, DVD player, and VCR). Unless there is a firmware update or a front panel reset, there is always a signal going out to the TV, even if it's just a blank signal.
The best connector, of course, is a S-Video connector.
