New Customer. Had a 211k with EHD. Just didn't work well for me. So I had it swapped out for a 612. I am having a strange problem with the receiver. The receiver is in the bedroom. We do not use the TV every day. Three times the receiver locked up, no lights on on the front panel, unresponsive to remote and the fan running non-stop. Required a reset to get it to work again. As soon as the reset takes place the fan turns off. Today I had the receiver swapped out for another 612. Sure enough it did the same thing. Suggestions? The receiver sits on top of a dresser. It is hooked to a Vizio 27inch HD TV via a HDMI cable.