[MRCA] T-195 Auto-NoTune

[DSP3]

Chris,

But that I was the guru for the GRC-19, but that's not the case, of 
course.  An area of concern for the servo system are the matched sets of 
discriminator diodes.  The manual admonishes to change these diodes on a 
VERY regular basis, something like every 60 hours of use!. To even 
mention those specific components is a clue.  I think the requirement 
for a higher DC bus voltage is not a design issue but one where other 
components in the servo loop are deteriorating.  I'd, of course, check 
the tubes in the servo chain and then replace the diodes.  The a.c. 
chopper could also be going bad.  Its the same part as in the ARC-38.  
They're available and not too expensive, either.  The last time I found 
them, they were about $20 each.  I may still have one or two here and 
someone on the group will surely have some.

Jeep - K3HVG


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