Thanks, Jody, for the tube info.  Interestingly enough, I was able to
find a source through the net that has the tubes and at reasonable
prices.  You certainly have a good memory for the function of the
tubes.  As for the capacitors, I was planning to replace them all.

One thing that seems odd about this unit is the power hook up.  There
is a 6 pin male connector that feeds the AC in.  Unfortunately, I did
not get the mating power cord and so it will take some guess work to
figure out how the hot and neutral get divided up here (I'm an ME with
a smidgen of EE skills).  Has anyone seen this type of AC input before?

Michael Concordia