[R-390] Low Audio Problem Solved!

[Frederick Bray]

I finally discovered that the problem was with a broken wire to the 
local audio pot.  The particular terminal is supposed to have two wires 
going to it.  However, one had broken and had slipped up under the cable 
lacing where it was not readily visible.  Since I could see a wire going 
to each of the three terminals, I thought everything was okay.  Only by 
using the schematic and testing every pin on the connector did I 
discover that one was completely open.  Jumpering the broken wire to the 
correct terminal on the pot restored the audio.

I still have to clean up the wiring.  The last person who replaced the 
pots did a terrible soldering job, among other things.  I have to decide 
whether just to fix this with the old pots or wait until the new ones I 
have on order arrive and swap them out.

Thanks to everyone who helped.

73,

Fred
KE6CD