Thanks for the above method with the Bryston remote! This with an older B60R, the spousal unit said the remote stopped working... so she swapped out the battery, still no luck. So I eventually get around to checking, and having read this thread, applied this method - tried devices 1 thru 4, no joy. Was about to check with Bryston for an RTA, then thought “why not try the other direction”. Boom! Device ‘0’ it is! Thanks!