On Wed, 03 Apr 2013 18:09:30 +0100, Ian Field wrote:

"Gareth Magennis" wrote in message
...
Hi,

I have a Roland TR909 here where the cream plastic casing has yellowed,
probably due to smoking in the studio.
What is the best stuff to clean this off with?
This is now a valuable antique and damaging it in any way is not an
option.


When I used to repair monitors, I used neat bleach & a stiff brush to
clean cigarette yellowed cases.

Yeah, that's worked for me, too. That or jif (or cif or bif or whatever
they're calling it this week).

I've not tried the retrobright stuff before (it's been on the to-do list
for a few years :-) on plastic that's suffered UV damage, but I believe
that there can be problems with non-uniform restoration of the surface
leading to a patchy/mottled effect, which personally I think I might find
more irritating than a yellow-but-uniform colour.

cheers

Jules