Leo wrote:
>
> Hi friends,
>
> referring to the origin of the tread, the msg of Lee Jones, I have been the
> same problem of miss contact on the cordless phone (Daewoo) and on the IR
> television remote control (Philips).
> After opening teh two keypad, I have found between the rubber and the PBC
> some liguid that seems oil, but believe me, no member of the my family put
> oil on telephone or remote control.
> After cleaning with more accuracy and delicacy the PCB and the black rubber
> spot all the two keyboard return to work correctly.
>
> But I'm curious to know th origin of the oil. I think a possible sweat of
> the rubber ??

Hi Leo, working to IBM as mainframe engineer sometimes we use to fix
some computer terminal keyboards (at that time we needed to open
keyboards and fix them <g>), and you will not believe about things we
found in the middle (and below) the keys...  First that those things you
would never suppose to see inside a computer room...and second that some
of them were impossible to be there, as for example one of those lady's
fake nails... red...stuck below the Enter key, BUT there was no female
operator at that room... !?!? hmmm.

The normal skin oil and humidity (perspiration) is enough to enter and
accomodate below the contacts.

Perhaps it was a special oil from the factory... do you already saw
special grease proposital applied at automobile electrical connectors?