Now I can start a new Topic.
It looks like the original Owner's Manual, and a Service Manual are in the file cabinet with information from Serial No. 15K01 to 18K50. This manual shows DC Balance pots on the Input Section schematic. The only way to verify with certainty is to open up the Mc carton and look the unit over.
Should I just go through the schematic and parts list, and make a list of ALL electrolytic and signal path caps? Any other things to note such as diodes?
The only thing I need is a variable AC base to control the temperature of my '70s vintage Weller WP-25 (25W) soldering iron. This thing can get awfully hot, such that it could burn the old glass-epoxy boards!
-Gregory