Repair

I printed the schematics, figured out how to remove the Relay Shelf, and began:

• Bias Transformer T203 was utterly toasted... burned and bubbled. Fortunately Peter Dahl / Hammond offer a top-quality replacement - Whew! Nearby components and the wiring-harness appeared miraculously undamaged!
• Bias rectifiers had been changed to silicon diodes, mounted on a terminal-strip. However, the terminal-strip was bent over, shorting at least one (perhaps two) leads to the chassis.
• In a similar vein on the underside of the Relay Shelf, Bias divider resistor R218 was bent to touch the chassis
• Next to this bent/touching resistor, I then saw the cracked-and-broken 10-ohm R232 (limits screen-supply inrush current).
• And, the RF output connector had been changed from the N-flanged original, to a loose-and-sloppy SO-239 barrel (featuring mangled threads which prevented tightening).
• Time-delay thermal relay K202 was only 35-seconds, not 3-minutes as Collins designed (to ensure V101's cathode is properly heated before use).
• Rectifier-filament transformer T202 had cracked-and-broken secondary leads. Because this amplifier had replacment solid-state HV rectifiers, I decided to simply remove the no-longer-needed T202.

Here is a photo of the taped-up schematic, with my annotations and some flags showing the components I decided to replace: