My H24 crapped out over the weekend. Turned on TV, everything powers up, no picture. Switched input to Apple TV, it works fine, so TV is fine. Reset H24, picture comes back during restart sequence, all looks well until "checking satellites", then TV goes dark again, no pic, no sound. Tried reauthorizing (twice), no help. Tried hard reset (pulled power), same result. Other TVs in the house work fine, so I know there's no dish issue. All connections secure. What else could it be other than failed receiver? But it doesn't seem like a failed receiver as it passes self-test before the checking satellite routine, and nothing has been disturbed. Hoping to avoid the painful call to DTV service. Any suggestions on something I might be missing? TIA.