Our Motorola HD DVR has stopped sending anything to the TV. If I plug the Shaw cable directly to the TV I get a station.
I tried connecting the TV using a different HDMI port with same result.
Sorry to hear you're having issues with your DVR. The first this to try is Resetting Your Digital Box. Also, if you have another type of cable to try connecting to box to the TV with, that wouldn't be a bad idea. If those steps don't do the trick, let us know what you see on the display on the front of the box when it's turned on so we can troubleshoot with you further.
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