If anybody has seen this problem............I picked up a couple of these
radios from the local airport. Two of them work ok, but the other two are
running open loop with their gain. In other words, no AGC. Any ideas on what
could be causing this?
I do have the service manual, and I have replaced the three 10uF
electrolytic caps on the main board. Still, the problem persists. Thanks in
advance, for any help!

Pete