Help

[mr_fons]

Just wondering if I could get some advice. I was striping some wires from old Futaba servos to make a switch and on some of the black (negative) wires, there is a black coating on the wires and solder does not want to stick to it.

What is this black coating and how do I go about to remove it (if you can) so that I can solder the wires.


Many thanks.

Fons

 

[Brian Sorgente]

Maybe try some brake cleaner then some flux before you tin with solder?

 

[MarkScott]

My suggestion would be to toss that connection, find a new connector to use.

 

[Grimracer]

Yep.. its bad.. the lesson here is to NEVER leave a battery connected to the system when not in use...

I always unplug my packs from the system when the boat is parked for the day.

Grim

 

[mr_fons]

Thanks for the reply's.

 

[camaroboy383]

Its usually water that wicked it's way into the wire..

 

[Mark Stein]

The black coating is oxidation . No good for connections. Junk it

 

[Walt Barney]

Toss it, the black is caused bt leaving the battery connected for a long time and you cannot clean the wire to make the solder stick and if it does stick the connection will not hold up.
Walt Barney

 

[Tom Foley]

If you HAVE to make it work just lay the stripped back wire on a piece of metal or other hard surface and use a piece of red scotchbrite or bronze wool to run over the wire to remove the "black wire disease " . Turn the filaments of wire till you get it all . It will now solder once again .

 

[mr_fons]

Again thanks for the info.