For the past few weeks I can not tune to any HD channels on my 1000.4 (1000.2?) WA dish that has 3 LNBs for 110, 119 and 129. As soon the channel is tuned to any HD channels (129 sat?), the VIP 211K receiver freezes. Then it takes a hard boot and long wait to get any non HD channels back. When I tried to do a check switch, the receiver freezes again. Other SD channels from 110 and 119 sat works OK. Does this sound like my LNB for 129 sat is gone? Need your feedback before I call Dish for service.