Electronics > Repair
best method to restore conductive keypads?
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Psi:
Sometimes the carbon coating is very thin on top of black rubber.
It gets worn off completely and no amount of cleaning will get it to work, obviously.
coppercone2:
ah, I thought it was a poured layer. Like why would you have 2 things to pour instead of one if you are gonna paint it? I guess unless they need different softness materials to get the right feel. Like a brace
xavier60:
A while back I tried to remove the conductive layer from the underside of the buttons on a keypad using Dremel with a rounded burr.
The burr didn't seem to remove any material, but I found that low resistance was restored.
coppercone2:
you mean like sand paper or like a carbide burr?
xavier60:

--- Quote from: coppercone2 on February 24, 2023, 11:30:15 am ---you mean like sand paper or like a carbide burr?

--- End quote ---
Tungsten carbide Burr like this one, https://www.hobbytools.com.au/dremel-max-life-9903hp-1-8-3.2mm-tungsten-carbide
My original intention was to remove the black conductive layer to see if an adhesive would work better at sticking on some aluminum foil.
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