Setup: HR-24 / 500 Slimline 5 LNB dish I have 2 rg6 runs from my dish to my HR-24 (with B band coverters) in living room. No SWM or other receivers in the house. I've checked all the suggested sources: 1) no obstructions to dish 2) checked all physical connections (cables and connectors from all points from dish to receiver) and 3) alignment I have signal strength in the 80/90s for all sats except for 103CA (mid to high 70s). I've started to get intermittent 771 error over the past 2 weeks. Tried cold booting , but the problem returned. I dont think its a hard drive problem as I'm familiar with those and it always effects playback, but my 771 is during live tv When the error occurs the msg always notes 771 on tuner 2. I will switch inputs at the LNB tomorrow morning, but i suspect this will not fix the problem as if the LNB was bad i would have no signal on both tuners. If switching inputs at the LNB does not isolate the issue, i will try switching the receiver to 1 tuner mode. I'm tempted to just swap receivers w/ my brother and if the problem follows the receiver, its defintely my POS HR-24.... Long shot, but how does one diagnose if the b band converters are bad? THoughts? This is starting to drive me insane.... cant i just watch some olympic beach volleyball?