Power Window Switches (again)

[Jim Jordan]

Hi,

Years ago telephone companies used relays exclusively for switching and they
experienced the same problems we do with window switches.  The phone
companies developed a contact cleaner that I've always wanted to use but
have never seen one.  Their cleaner hit each pair of contacts in turn with a
very short duration high voltage.  I don't know the values of the voltage or
the duration or how to make one, but it seems that this would be preferable
to other means if it could be done practically.  The guy who told me about
this is gone on to the great Central Office in the sky.

It seems to me that boring holes in the switch housing only allows more
contaminants, dust, oil, coke, coffee, etc. easier access.

I clean my switches laboriously using a relay contact dressing file.  The
file is about 3 inches long with an emory paper type coating that allows
polishing and cleaning each contact one at a time.  They used to be made by
General Cement, GC, and were available at electronic parts stores like
Fry's. 

Cheers!

Jim Jordan