The conductive rubber does wear away with time, depending on how it was
manufactured. (if you have cleaned the pcb/other surface w/ tarnex (for
metal) and then water, or alcohol if carbon based contacts, it's probably
the pad (ohmmeter should show no more than 100-200 ohms when the points are
laid across the pad within 1/16" or so of each other, if it's greater than
500ohms, the pad is worn out). I did superglue very thin foil onto a few
pads once, it's still working, but does bounce sometimes. (it's the mute
button mostly)
I have seen a compound, I believe MCM electronics sells it, that is supposed
to work that you brush onto the contact pad. I also saw someone use silver
conductive paint on contact pads, but this was not working at all when it
came in (was used on a memorymoog, contact pads have not been avail for
those for around 15 years).
Scott R
----- Original Message -----
> eric@megageek.com wrote:
>> OK, so I have a remote control that gets used alot. The main buttons
>> aren't registering any more.
>>
>> Is there a way to "clean" or "resurface" the button's conductive rubber
>> back side?
> I clean remotes and other keypads with just a dry paper towel and a little
> knuckle grease. Unless it was immersed in something sticky, this is
> enough. Also, I've found the contacts, not the pads, are what need
> cleaning; they oxidize. A paper towel is rough enough clean them. If its
> really bad, use a pencil eraser followed with the paper towel. Pencil
> erasers have some mind grid embedded in them. Electrical engineers use an
> eraser to clean non-gold plated contacts, the eraser will completely
> remove the gold and even copper plating.
>> What would happen if I just put a piece of metal there?
>>
> Don't know, just guessing, but you might get bounces (multiple button
> hits).
>
> Peter Thomas
>> TIA!
>>
>> Moose
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