I have a 6B-SST(C) three-channel amp, kbuzz, and it has a circuit breaker, not a fuse. If yours has this, you might try resetting the breaker, but the smoke doesn't bode well. The 6Bs modules can be removed individually and sent for repair, and this is likely the case with the 9B. The surgical process to remove the boards requires some delicacy, as does the packing, but you should be fine doing so; I'm sure Bryston will guide you through the uninstall/install procedures, turn the board around, and get it to you quickly.
Mike Pickett has been great as regards repairs and tech advice, and I've always received a swift reply to emails: mpickett@bryston.com
Best,
Rich
_______________
Whiney Napa Valley