First post here...
I have a similar problem. It surfaced Saturday night while setting up timers on our new dual hopper/joey configuration. Once I set the timer for Formula 1, I lost sat 129 (and lots of HD). I removed the timer and HD came back. Sunday morning, 129 was gone, again. I unplugged/replugged, did the switch reset thing with no luck. I called Dish, we did the same things and it came back. The tech noted in the ticket that if it happened again, we'd have a service call. It happened again when I setup PTAT on the same Hopper. Tech is coming this afternoon. Because PTAT can't be disabled once the recordings have started, we never got 129 back. I checked signals and 129 is good on tuners 2 and 3, and locks on 1, but never gets the name. So, my guess is that the Hopper is bad. I guess I'll find out this afternoon.
Scott