[sdiy] OT Non functioning buttons on U20

[Byron G. Jacquot]

>Not analogue but my mother keyboard, a Roland U20, is playing up.
>The little buttons for editing / selecting sounds are dying on me.
>*Before* I do my usual "take it all apart and f**k it up some more", I
>thought I'd ask if anyone had any dealings with this sort of button
>and knew what was going wrong. Its been a steady decline of function
>over some time but not really a problem until now.
>Any insights would be most welcome.

If they're those buttons that are made of a cast rubber sheet with carbon
buttons that hit traces on a circuit board to make contact, I think the
wisdom on the list was to clean the carbon button and circuit board with a
pencil eraser.

If they're tact switches, replace them.  They're not too uncommon, and a
decent catalog will have dozens of choices.  If you have a choice, get ones
that are rated for more contact cycles in their lifetime.

Byron Jacquot