A quick post here: I’ve had several repair jobs in the last few months from people complaining of broken Avantone Pro BV-1 & BV-12 power supplies from the newer runs. The big problem appears to be the pattern switch. If the nut on the front of the switch loosens, the switch can rotate really easily, and that pops off the 3 wires on the back of the switch. Then your power supply, and therefore your microphone, is kaput. And no one likes a $1000 paperweight.
Here’s the correct wiring should things fall apart (at least for the power supplies I’ve come across…I have no idea if there are multiple versions of these floating around out there.)
GREEN WIRE – A (in the middle of the switch)
RED WIRE – 9
WHITE WIRE – 1
Two of the power supplies I worked with DID NOT have a toothed lock washer underneath the nut, which is a significant problem. If you fix this yourself, go buy a lock washer and some blue Loctite, because no one likes when their main vocal microphone breaks right before the start of a session.