In message , Reestit Mutton
writes
Lee Blaver wrote:
Have a Google through sci.electronics.repair, this has come up
before not surprisingly, and there were some methods suggested.
IIRC there is an "Official" cleaning/flushing cartridge, but an empty
one refilled with IPA or similar apparently works.


India Pale Ale???? ;o)

Try isopropyl alcohol
--
geoff