Archived posting to the Leica Users Group, 2006/07/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On Jul 26, 2006, at 5:08 PM, lug-request@leica-users.org wrote: >> Be careful with contact cleaner. I had some that gave an >> immediate fix to >> the problem, but was corrosive enough to eat away at the contacts. >> Long >> term use needs to be examined carefully. >> Take it from an old radio ham, the type of cleaner to use is the type sold at Radio Shack and other electrical outlets specifically to clean electrical switch and tuner contacts. It is non corrosive to the metals usually used in electrical contacts and contains a conductive lubricant to ease switch action. It is usually sold in an aerosol spray with an extended nozzle to get into tiny spaces. If you are using it near a plastic or polycarbonate camera body, test it on an inconspicuous spot to see if it mars the finish. Pencil erasers and fiberglass wicks are good for an emergency cleaning but they contain abrasives that will eventually wear the contact. That being said, I always carried a pencil type typewriter eraser in my camera case to clean battery contacts. Most batteries exude a substance over time which coats contacts and eventually raises the electrical resistance. Larry Z