[R-390] R390A microswitch

[Mark Huss]

If you have not taken it apart yet, try this. using a rubber mallet, or 
a towel and a regular hammer so you don't mar the paint. Tap the front 
panel with it right where the switch is (about where the words 'STAND 
BY" is? We often got calls where the radio would not turn off when in 
the OFF position. The contacts welding together from inductive surge. a 
good tap always released it, and it was good for another few years. It 
may not work for the microswitch being open. But those old microswitches 
can be taken apart. And while you are in there, put a 0.1uf cap across 
the contacts to prevent the arcing. Well worth the trouble considering 
the cost of replacement. May not even make a drop-in replacement any 
more. In that case, just use a switched power strip

Gary E Kaufman wrote:
> Anyone have a source for the R390A microswitch ?
>
> I picked up a nice R390A at a hamfest missing handles, and the 
> microswitch is open. Seems pretty clean otherwise.
>
> Did I really need another??
>
> - Gary
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