[R-390] Local Gain Control "Problem"

[Mike Hardie]

Yesterday the R-390A was fired up with an antenna attached for the first 
time in who knows how many years.  It's been a long road to this stage, 
initially there was a waterline across the chassis/sub-chassis's, several 
cooked resistors and leaky caps, a broken bandswitch wafer, broken clamps, 
cam and bandswitch timing was non-existant, the list goes on. The repairs 
were a step by step learning process, but very worthwhile.

Here's the current problem, with a relatively strong station tuned in and 
the RF gain control at "10" the audio is about the right level with the 
local gain control all the way down. (Against the "0" stop)  The local gain 
control functions normally, when it is turned higher the audio level becomes 
uncomfortably high.  The RF gain control also functions normally, setting it 
to "5" results in the local gain control range being normal, or at least 
what I think is normal.  It's as if there's too much gain somewhere.  The IF 
gain pot was set as per the manual, although I haven't re-checked it.  The 
meters are functional but not original, so they aren't really reliable for 
trouble shooting.

Anyone seen this before or who can offer advice?

Mike VE7MMH