while it's likely a bad HDMI port, did you try changing the resolution whle on that output... I read where you indicated it was on 480i, and some TV's don't like displaying that resolution. just something else to check out... It was stuck on 480i for the night. I woke up the next morning and it was on 1080i and recording. I think the thing just froze up or something from all that on and off from the power going in and out. I hooked up my AppleTV to the same ports on the back of the TV that the DIRECTV was hooked to using the same HDMI cable and I had picture and sound. That's how I eliminated the HDMI port on the TV and the actual cable from being the culprit.