[AMRadio] G-50 revisited

[Rick Brashear]

Has anyone ever run across a voltage chart for the Gonset G-50?  I have 
an original Instruction Manual with the folded schematic (in very 
delicate condition) but there is no voltage chart?  I wonder if there is 
a service manual?  If anyone happens to have such a document I would 
love to have a copy.  I have a little squeal when my volume control is 
about 2/3 of the way open and it's driving me crazy not being able to 
locate the source.  All tubes are good.  Thanks for any assistance with 
the chart or squeal!
 
73,
Rick