Alright thanks I will give those a try.
This unit is definitely not the easiest to get the chassis out of the cabinet because of how they mounted it in there, they used 3 nuts to mount the chassis to the cabinet for the amplifier/power supply chassis, and the first two nuts are fairly easy to get to the 3rd one though is a PIA to get to because its located between the two tone control pots and its hard to get a socket and ratchet in there without buggering anything up.
The tuner chassis on the other hand I can't see where the mounting nuts are on it because its located partially behind a piece of wood supporting the cabinet and it impedes my line of sight to it, just to check the tubes I had to crane my neck every odd way to see the tube sockets to reinstall the tubes after I checked them.
Definitely not the most serviceable friendly chassis.
As for the "power switch" wafers when I turn it to the functional positions (the FM AFC and Phono positions) I hear a popping noise similar to the "relay click" you hear in the old Pioneer or Sansui stereo receivers from the 1970s and then the tubes start warming up and then I get my audio about 30 seconds later, and when I switch from the functional positions to the non-functional positions (going from FM-AFC to FM) the audio dies out right away with the gradual audio fade out of the capacitors discharging, and there isn't any popping noises when it does that.