I've had my 622 running in dual mode for a couple years. no Problem. the other night went to bed, no tv. Checkrd all connections, nothing. got a new cable, now I can see the output on tv2, crappy picture, no sound. kinda like when you have a crappy signal. also no matter what channel i have the modulator(usually air, channel 66) set on, there is no pic. when i scan with the tv it will pick up the signal on channels 40, 59. not the channel i have set in modulator setup. anybody ever see this before? any help would be appreciated.