[R-390] AGC Voltage Continued

[Mike Hardie]

Group,

I think I'm onto something.  The resistance at pin 6 of J512 was 22K when it 
should be infinity, by continuing on I found that the resistance on the 
outputs of the filters was zero, when it should also have been infinity. 
(The filter outputs are all connected together on one side according to the 
schematic)  After moving the IF deck around a bit the resistances were 
normal - yep, one of those.

I can get the resistance on the filter output to  change from zero to 
infinity by turning the IF deck over a couple of times.  Likely there's 
something loose inside one of the filters.

I can't figure out a way to isolate the faulty filter except by unsoldering 
the common wire to each filter one at a time, turning the IF deck over a few 
times while watching the ohm meter.

Mike