I wonder if the 990 has a given timeframe it tries to detect both analog and digital signals and maybe that timeframe isn't long enough. Maybe the analog signal hits the 990 sooner and the digital detection "times out" so-to-speak. So, it grabs the analog signal and miliseconds later the digital signal finally is received by the 990 and it is too late by then.
I really don't know enough about the internal workings of processors. All speculation on my behalf.


3 days and not a single issue with the analog unplugged, and still counting

I haven't submitted a ticket yet. Figured I'd wait a day or two more.

Man, what clock does the forum go by. I just posted this around I'm guessing 8:43 PM and it says 1:43 AM. I figured the greatest it could be was 1 hour for Eastern time since I'm in Central.