XM
I could not wait and so I called about the 7700.
The mechanic's name is Frank. He told me that the 7700 has been running two days on and off. No noise. He ask me if I had the unit plugged into any other device such as a line or surge protector.
I said no that it was plugged directly into a wall outlet.
He intends to take a look at it internally later today.

Now I am really scratching my head.
Could it be the outlet?
The only other thing I can think of is that I do have a ground wire (that is not in use) right beside the amp. I have been to lazy to take it out of the PVC I have it running thru but it is laying very close to the amp.
I am going to work on it right now.