Rolling back to the Peavey EQ-27, it would appear that, with exception of the sliding potentiometers, all front panel mounted controls terminate in failed solder joints at the PCB.
This just fortifies my dislike of panel mount controls soldered directly to a printed circuit board, I view this build method as nothing more than a labor saving tactic to shave money off the manufacturing process. It is not as road worthy as a wire loom that will flex as opposed to transmit the jolt of an impact to the circuit.
The pot legs are even worse, having wicked oil into the joint. This material will be removed prior to repair.