[R-390] 390A audio

[wb3fau55 at neo.rr.com]

Matt, sure does seem impossible that the audio line/local would be crossed up in 4  mainframes?
 One  may ask-  are they all from the same contract?  or did they all come from the same repair center and modified?  or  wired wrong from the start, and never  corrected?   Who is the builder?  One thing  for sure,  enough hands get involved [repair centers], and you can get  some very interesting incorrect repairs.  
   I  have asked  before,  how many spare  modules  were contracted?  Russ.