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RE: Hickok 6000a test slide switch repair?

Posted by Triode_Kingdom (A) on July 2, 2017 at 20:46:26

In Reply to: RE: Hickok 6000a test slide switch repair? posted by fredtr on July 2, 2017 at 13:05:54:

I'm hesitant to offer advice past this point, other than what simply seems logical for the situation. Bear in mind, I haven't ever been involved in refurbishing a switch at this level.

My overriding concern is that all the surfaces should be plated at the same time, otherwise the harder one (probably the base metal) will quickly wear away the softer one. A second issue has to do with the metallurgy of the plating. It's not clear to me which metal - or metal alloy - offers an optimum combination of conductivity, wear resistance, tarnish resistance, etc. Similarly, I don't know if the most appropriate material is readily available for plating a small job like this.

At some point, I might look for a more modern replacement for the Hickok switch bank. I do have a CNC mill and small lathe, so constructing a custom mounting bracket is possible. Whether I can locate new push switches with the same contact patterns is another matter.

Good luck with the project. Please post results, even if things don't work out. This is bound to become a more common problem as these testers age.

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