Any idea why the over the air module for the 722K gets so hot? The rest of the receiver is a little warm but on the bottom where the over the air module is, you can hardly touch it. I wonder how much this will effect the life of the receiver. My 622 has the over the air tuner built in, and it is not hot on the right side. Why would the built in ones not get hot, but the removable ones do?
