Did you have your cable box attached to the umc?
Did you do a factory reset in the settings?
When you hooked back up the receiver, I suspect you also stopped using the McCormack as an amp. Were they all plugged into the same outlet?
I suspect your unit isn't faulty, but there is something else up with your setup. These questions are a good start at figuring out where the problem lies.
Did you do a factory reset in the settings?
When you hooked back up the receiver, I suspect you also stopped using the McCormack as an amp. Were they all plugged into the same outlet?
I suspect your unit isn't faulty, but there is something else up with your setup. These questions are a good start at figuring out where the problem lies.