[R-390] need R390a power switch

[Jacques Fortin]

Hello Jeff,

You can flip your front panel down, then the microswitch on the function switch will become accessible.
Remove the two power wires from the microswitch, so it can be removed in-situ.
It holds with four 2-56 screws.
Take care to not loose the four small washers between the microswitch and the function switch assembly.
Once removed, the microswitch itself can be opened and cleaned.
I had the same problem with a 1967 EAC: the internal contacts "sticked" closed because they were arcing.
I cleaned those and applied a drop of Deoxit.
No problems since.

73, Jacques, VE2JFE in Montreal