02-25-2012, 12:07 PM
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Join Date: Apr 2005
Location: High Sierras Near Yosemite Nat Park
Down towards the bottom of the manual is a whole section on trouble shooting,.
Looking at the service Manual,
: PB1183B is the low frequency IF unit.
This has the low frequency IF amp, crystal filter(s), detector and AGC/S meter circuitry.
My first thing to suspect is dry electrolytic caps, these are 40 year old radios, and caps simply do not have a service life that long.
Look for bulging/leaking caps to start.
NASA/SOHO When I was a child
I caught a fleeting glimpse
Out of the corner of my eye.
I turned to look but it was gone
I cannot put my finger on it now
The child is grown,
The dream is gone.
but I have become comfortably numb.