Couldn't sleep so I turned on the TV and my HR21 was displaying "No Satellite Signal 771" Both tuners have lost signal. I did a reset via red button but I get the same thing on all sats. Clear sky and my 2 other TVs are working fine with 98% on 101 off the same slimline 5 lnb. For some reason the unit is slow to respond and i cant playback recorded shows either, they play for a second then stop then play then stop. 40% left on HDD. last update was 12/12, connected via Ethernet, no phone line. EDit: since I still couldn't sleep I searched some more and discovered a tip to "tune to channel 480 & 481 to reset the b-band converters" and that fixed it. I know what the converters do and why we need them but why does this happen? Should I get new ones? thanks.