[Hammarlund] SP-600 AVC voltage

[daveaust@juno.com]

hello,
Just dug back into my sp-600-jx17 and am getting some distortion in AVC
mode (AM) that cleans up well in MAN mode with RF gain cut back. Checking
my AVC bus voltages it looks like below -8 volts max (strong signal in
AVC mode) compared to the standard -51 volts in manual mode and RG gain
set to zero. My question is shouldn't the AVC mode produce more neg
voltage? At pin 2 of  V14b my voltage is higher than the final AVC bus
path-- it drops after crossing the first resistor towards the bus (R60?)
going from pin 2 of V14b. I havent completely re-capped but cant find a
short to ground which would lower that voltage via a bigger drop. Maybe
just a leaky cap. I plan to replace all caps but just want to know some
theory detail about this corner of the rig. Just seems I should get at
least -28VDC or so.
thanks, dave austerman , N5WNM