My Pell busker organ is happily playing again, thanks to trouble
shooting from Alan Pell and suggestions from several other people.
It's problem turned out to be a blown fuse in a not greatly
accessible place, but all is now well.

Alan pointed out that in his organ the power cord connects to the
battery charger, not to a power supply, and therefore the organ
will not play without a good battery.  Thanks to Angelo and Tony
for their suggestions also.

Beatrice Farmer