[LarryFS]

I started but ran into a different radio behavior after I turned the chassis inverted.  During power up I would initially get low volume, then the click, then a high pitch loud squeal.  This behavior was not consistent.  Sometimes the radio would work as it previously did with the chassis upright.  I sprayed Deoxit into the volume control as best I could and I moved some wires slightly that looked like they might be in hard contact with a metal edge.  Also, when I touched the cap of the 75 tube I got a lot of loud hum and some squeal.  I replaced the 75 tube.  The radio now powers up to a low volume state with no click.  As I turn the volume control up, a high pitch tone/squeal starts about midrange on the volume control and gets louder as I increase volume.  I will start again to measure voltages and see what I get.