Congrats and welcome to BA 5K club.
I think your power-protection LED should be green, not red. Has anybody messed with the polarity of the plug? or with the led itself?
If I remember correctly my led is red at the start up and then goes green.
There's a dude on YouTube with a pair of BA5000s, a pair of MC2300s, and a pair of MC2500s with all kinds of crazy vids. I have a pair of MC2300s and pair of MC2600s but would still like a BA-5k!
Just to be clear DO NOT plug the BA5K into the power sockets at the back of the AU - plug the BA5K and the AU in to their own separate wall power outlets.
Are you asking or confirming? I plugged them separately now..
i think you're probably rightI would be willing to bet it is 245110084. Mine is 245110010 (Nov. '75).