The front-end is disassembled here for cleaning and evaluation.  Luckily, this was all straight forward and no real issues were found here.
Dusting, PCB and chassis cleaning, and DeOxit for the switches.
The broken switches are seen here
alongside the repaired board.


Below, the front-end is re-assembled.
The lamp is still the 8v incandescent
(which is burned out). This will be fix
later with an LED upgrade.