Mellotronists

Hi all-
   My M400 tone control is non-operational, thought I
would dig into the problem.  Tested it, wiper appears
to be open.  Reads 32K for the full value between the
other terminals.  Is this a correct value, and is this
pot linear or log(audio) taper?  I don't have
schematics yet.  This machine has 2 cards in the
preamp box, pots have plastic shafts.  May as well get
the volume pot value, too, if it is not too much
trouble.

   Thanks
 
  -Bruce Daily
   M400 #1221

PS- The control knobs on Mark Wallis' WEM Audiomaster
mixer look quite familiar...





       
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