Maker Pro
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Tarnished silver

P

Phil Allison

Jan 1, 1970
0
Hi to all,

got a number of Speakon connectors yesterday that have solder pins on the
back for PCB mounting. Unfortunately, they must be very old stock and the
once shiny silver plating has gone very dull and brownish - naturally they
are not easy to solder.

What is the best way to remove the ( silver sulphide ) tarnish and make the
pins solder friendly again ??

BTW:

I am using old fashioned 60/40 " Savbit " five core solder.



..... Phil
 
P

Phil Allison

Jan 1, 1970
0
"Rheilly Phoull"
G'day Phil

I have cleaned up resistor leads & similar with steel wool,

** Shame they ain't silver plated.



.... Phil
 
A

Adrian Jansen

Jan 1, 1970
0
A possible alternative to steel wool is the cheapo green kitchen scourers.
Might we worth a try.

Microscrub would be ideal if it was still around......
A fiberglass eraser works pretty well on small pins and surfaces. At
least the residue is non-conductive, unlike steel wool.
 
P

Phil Allison

Jan 1, 1970
0
"Rheilly Phoull"
Phil said:
ALAS so true !!

** Got any idea what chemical " Tarn Off" contains.

It dissolves the sulphide quite quickly.


...... Phil
 
F

F Murtz

Jan 1, 1970
0
Phil said:
"Rheilly Phoull"


** Got any idea what chemical " Tarn Off" contains.

It dissolves the sulphide quite quickly.


..... Phil


Thiourea and phosphoric acid and a bit of detergent.
 
T

Trevor Wilson

Jan 1, 1970
0
Rheilly said:
Hmmmmm, best not to use the coffee mug for it then ??

**Why?

Read the label on a Coca Cola container sometime. No detergent, but plenty
of phosphoric acid. Pretty handy stuff, phosphoric acid. It's food grade and
you can even use it to clean your swimming pool chorinator.
 
T

Trevor Wilson

Jan 1, 1970
0
Phil said:
Hi to all,

got a number of Speakon connectors yesterday that have solder pins on
the back for PCB mounting. Unfortunately, they must be very old stock
and the once shiny silver plating has gone very dull and brownish -
naturally they are not easy to solder.

What is the best way to remove the ( silver sulphide ) tarnish and
make the pins solder friendly again ??

**Here's some possible remedies (I've tried most)
* Commerical silver cleaner (Silvo).
* Toothpaste.
* Baking powder and water.
* Place a sheet of aluminium in the bottom of a frypan. Add some water,
baking soda and a teaspoon of salt. Bring to the boil. Add the silver
pieces. Rinse carefully.
BTW:

I am using old fashioned 60/40 " Savbit " five core solder.

**I had no idea there was another kind of solder (worth bothering with).
 
M

Mr.T

Jan 1, 1970
0
Trevor Wilson said:
**I had no idea there was another kind of solder (worth bothering with).

Yep anybody required to meet ROHS *must* use non lead solder. Surprised you
aren't aware of that.

MrT.
 
P

Phil Allison

Jan 1, 1970
0
"Trevor Wilson"
**I had no idea there was another kind of solder (worth bothering with).


** ROTFL !

Sounds like that country venue in "The Blues Brothers " movie that
offered BOTH kinds of music ...




...... Phil
 
P

Phil Allison

Jan 1, 1970
0
"Mr.TURD"
"Trevor Wilson"

Yep anybody required to meet ROHS


** Who the **** t be doing repair work in Aussie ???

You smartarse ****.



..... Phil
 
M

Metro

Jan 1, 1970
0
Phil Allison said:
Hi to all,

got a number of Speakon connectors yesterday that have solder pins on the
back for PCB mounting. Unfortunately, they must be very old stock and the
once shiny silver plating has gone very dull and brownish - naturally
they are not easy to solder.

What is the best way to remove the ( silver sulphide ) tarnish and make
the pins solder friendly again ??

BTW:

I am using old fashioned 60/40 " Savbit " five core solder.



.... Phil

A small piece of leather, rough side up between finger and thumb twisted
back and forth leaves a nice clean bright finish......
 

shrtrnd

Jan 15, 2010
3,876
Joined
Jan 15, 2010
Messages
3,876
If you can get at it, I use one of the old hand-held pencil erasers.
I've used Tarn-X, but it has a tendency to pit the surface of the metal if you leave it on
too long.
On the pencil erasers, if it's an odd shape, I cut the eraser with an X-acto Knife, to the
shape I want.
With silver connectors, if you have the capability. I frequently drop them in 'Simple'Green'
in an ultrasonic cleaner. Just remember to let them dry well.
Good luck.
 
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