Korg Trident keyboard contact
2017-05-06 by peter@...
Hey everyone,
I'm fixing a Korg Trident (Mk I).
As you can see the small piece of wire soldered to the contact springs has fallen off on a couple of them and they need to be replaced.
http://i.imgur.com/0NiJgfg.jpg
Does anybody know:
1. EXACTLY what wire they used for the contact area on these?
2. A GOOD replacement that will take solder and won't tarnish in a couple of decades?
For 1, I suspect it's the same wire material as the one wound around the plastic "bus bar", seeing as it hasn't tarnished like the springs, it's most likely a precious metal, probably plating. I'm thinking gold plated copper wire, but I prefer not to guess, so does anybody know for sure?
For 2, again I'm thinking gold plated copper wire, like jeweller stuff. 18k plating perhaps since it's more durable and 24k plating might wear off too easily? But maybe it'll wear off too quickly anyway, so possibly even solid 18k gold wire, but that's kind of expensive.
Also, any tricks to soldering these? Heat dissipation... Plating releasing from the wire.. Regular solder working with whatever alloy it is...
Cheers,
Peter