[R-390] 390 RF Deck Replacing After Removal

[Charles Steinmetz]

Glenn wrote:

> If the switch is brown, you may create more problems by squirting
> contact cleaner on the switch.  The phenolic in the switch will absorb
 > the contact cleaner and swell.  The swelling will jam the switch.

Correct.

> If swelling occurs, you will have two choices: flush the switch with
> alcohol to remove the cleaner, or replace the switch.

Your results with switch cleaning have apparently been much better than 
mine.  The switches I've tried to recover were all sprayed by other 
people, and in some cases quite some time ago, so I don't know the full 
details of their trauma (other than by their odors, which have all been 
familiar -- i.e., common switch cleaning products).  But I have almost 
never managed to save switches that had swelled.

> To properly clean a phenolic switch you place a minute amount of cleaner
> on the contacts and rotate the switch to clean the contacts.
> Avoid getting the cleaner on the phenolic.

Yes, that is the right way to do it.  And not just for phenolic 
switches, for ALL switches.  Hosing it down is not the proper way to 
clean ANY switch.

Best regards,

Charles