The problem with the remote has returned but I think I've discovered the glitch.
All of the problems have arisen with certain CDs.
I've been able to duplicate the problem with the current CD which is knocking out the remote functions, it's a CD of Bartok's 44 Duos for Two Violins on Naxos # 8.550868, there are 48 tracks on this CD, when it arrives at track 40 it continues to play but the BCD-1 says "data" and there is no audio, and the remote functions are disabled even if the machine is turned off or disconnected as long as that CD is left in the BCD-1.
To resolve the problem it was just a matter of removing the offending CD and disconnect the power.
My previous problems with weird characters arrived from tracks that were around twenty minutes or so in length.
Not too sure why these are affecting the functioning of the BCD-1 but they are, it's definitely a software glitch as I've played all of these CDs on other units with no problems.
Robert