I have two receivers that have been working great for the last five years. Just recently my upstairs receiver started pixilating and dropping channels, which I could fix by unplugging the receiver for 15 seconds. But that doesn't work anymore and I only get 4 or 5 channels and no local channels. On those four or five channels I get a signal strength of over 70. My downstairs receiver has absolutely no problems, all channels work great. I swapped the LNB cables between the two receivers and the problem didn't track to the downstairs receiver. I swapped the receivers and that didn't fix the problem either. The "good" one didn't work upstairs and the "bad" one worked perfectly fine downstairs. I replaced the upstairs cables, the one from the wallplate to the receiver and the one from the receiver to the TV, no improvement. The TV only has one input and it's coax. My guess is I have some kind of low input power problem upstairs. Should I try to repoint the dish to get higher signal strength in the hope that a rising tide lifts all boats?