Stan, I suspect that EGON has some reserve RED components for just such cases, should you actually need something...Especially since RED is NOT obsolete,... .However, it might be an 'assemble it" kit... remember RED had to be constructed... unlike BLUE. The 'reset' switch and 'gain' pot on the amplifier board aren't used unless you've selected 'enable potentiometer' on the main control settings or testing the board... they are pretty much 'standard' components, however. if I were concerned about possible contamination of them, I'd remove them and discard, and clean the board well... I'd be more concerned about the ATmega8 IC socket developing contamination at one point... I'd probably either obtain a replacement locally, or remoe it and cleanup the ATmega8 and solder it directly, perhaps, if I developed issues later on. the RJ45 connector, cable and Jack and USB jack could also corrode, if they haven't already. Keep an eye on 'em and the E coax & connectors..
Cheer1