Several months ago, I was having problems with my digital box. Every few days, the picture and audio of the channel playing would cut out. However, when I pressed the "guide" button on my remote, the schedule would come up on my TV screen. To get things working again, I would have to go to another channel.
I called Shaw a couple of months ago, and they gave me a new digital box after examining everything. Everything was working fine, until today. Again, black screen and no audio, though the schedule would come up. I had to once again switch to another channel to get programming on my screen and on the audio.
Can anyone figure out what's going on?