I was recently making some alterations on the electrical hookup of
the blower/vacuum unit of my Reproduco and routing it through the
existing switch under the keybed.  When the work was finished the
unit would not play and it had been performing flawlessly a few hours
before.

An examination of the blower/vacuum unit confirmed that it is working
perfectly.  The play/reroll functions perform as they should, however
not a sound is produced as the roll passes over the tracker bar.

All the obvious items, loose hose clamps, etc., have been checked and
nothing obvious was found.  It would appear to be something simple
because nothing internal on the unit was touched.  If anyone in the
MMD audience has any ideas of how to solve this problem they would
certainly be appreciated.

Thanks, Tom Hutchinson