[upjeeper]

I have been working with electronics for over 30 years and have used many MANY 'contact cleaners'

The VERY BEST product to clean contacts is DeoxIT (DeoxIT® D-Series - Contact Cleaner & Rejuvenator)

Just the smallest amount of DeoxIT on the contact-surfaces.... and over the next week, the contacts will magically 'heal' and get better than new.

This stuff is soo good, many military/aviation specifications INSIST that DeoxIT is applied during manufacture to EVERY connection and switch.

Beware, DeoxIT is not inexpensive... just keep in mind that all that is needed is a few drops on each contact-surface.

thanks
what's your opinion of a pencil eraser or even light sandpaper followed up with dielectric?

 

[upjeeper]

I am pretty certain you will NOT be able to actually access the contact-surfaces.... hence some kind of liquid is necessary. Many modern switches have a VERY THIN layer of gold or copper which makes up the actual connection-point. This is where DeoxIT really works well.

Don't get me wrong, I have very often used pencil-eraser to clean contacts. This is most often the contact points on rechargeable batteries for power-tools which my buddies bring to me to be refurbished.

A "dielectric" is an INSULATOR... not something you want to use to improve conduction. Most often a "dielectric" is applied in the form of grease to prevent water intrusion into a connector while NOT conducting electrons thus interfering with the current between the conductors.

not trying to argue, just to better understand, but isn't dielectric used to prevent corrosion on contact surfaces?



so the DeoxIT could just be sprayed into the switches as they current sit (without disassembly or even removal from the wheel) and could possibly help?