Thanks again for all the advice folks! Certainly wouldn't have done this without a positively planted seed regarding heat. Hopefully I'll be much better off now regardless of whether or not it was the cause of my woes. ;-)
Is your install grounded? If it isn't this will cause reboots and problems.
Scary, isn't it? About three months ago I had an LNB die on me. The tech who came to do the replacement seemed very knowledgeable. He certainly had no trouble replacing the LNB. The new one works perfectly. But as he was leaving, he pointed to my rooftop antenna and told me it would be useless after Feb 17! (I have a 622.). . . Some techs are not as knowledgeable as we would like them to be. I had one tell me I could not use an OTA antenna with my 722 after Feb 17!!!! . . .
Scary, isn't it? About three months ago I had an LNB die on me. The tech who came to do the replacement seemed very knowledgeable. He certainly had no trouble replacing the LNB. The new one works perfectly. But as he was leaving, he pointed to my rooftop antenna and told me it would be useless after Feb 17! (I have a 622.)