[sdiy] Poly 61 near death?

[Travis Shire]

to scrub everything clean with alcohol or maybe there's a better
>
 solvent for the battery acid..I dunno. ANyone?

After cleaning the affected area, white vinegar does a good job of putting
the kaibosh to the acid and stopping the spreading. Rinse after the vinegar
treatment. I recently gutted a poly-61 because of *severe* acid damage. Its
now a diy project donor. It was so bad the gas from the battery crept up one
of the cables from one end to the other....nasty stuff. AFAIK, the poly 61
shares little with a multi-trak...especially sound quality (poly-61s are
yucky sounding).
As far as keys not responding, graphite powder (make yer own with some
sandpaper and a pencil) rubbed into the carbon pad contacts (keyswitches)
fixes that problem....had to do it with my poly-61 project board, worked
great. Also, do a test to find the pencil laying around that has the highest
carbon content (will have the lowest resistance)...it'll work better. I just
made thick scribble paths on some paper and took the meter to each path to
measure resistance. Don't laugh.....it beats buying conductive epoxy or a
circuitworks pen.......