got a dcp 501 digital cable receiver and it's got an analog and digital tuner. go into setup and tuned the channels automatically by analog tuner while i was waiting for it to get provisioned by comcast, now i only display channels 2-98(all analog). now i can't get the other 900 channels to display with the digital setup. do you think an sledgehammer will reset it?

i did the ol' switch to dvd, power off, hold setup and down key and press power again. did nothing to help me. please, anyone experience the same problem?