[Premium-Rx] ITT Mackay Marine 3030A Receiver

[HARRY WEBER]

Tech. question  for  Mackay Marine 3030A Receiver.

Over the years this receiver has gradually deteriorated in performance.  The main problem has been with the failure of the AGC network, here causing the receiver to overload, and having to ride the RF gain control  in manual mode at all times.
Isolating the RF. preselector; it generates 20 VDC.  on its own at the AGC. terminal input, while the actual receiver IF. strip terminal shows a zero volt output, with no change in it's output with change of received signal strength.  MMnn.
Have any of our members experienced this problem ? or is this just one of those random failures of no return.
Any comments on a solution would be most appreciated, it appears that this set is quite similar to the 3040A and 3041A series of receivers; possibly sharing the same architecture of design?
Never having the forethought of securing a  schematic nor operations manual for this high end marine 3030A receiver has turned this in to a most daunting task.
Who would expect solid state equipment to fail.  Does anyone have any documentation out there ???
Thanks,
HARRY
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