Sequential circuits samplers

howdy do
i have both a 2000 and 2002
the 2k developed some type of high resonance on playback and i was
told it needs some type of chip replacement.
just wondering if that is something i might be able to aquire and
install myself.
also the 2002 disk drive stopped functioning and im curious if anyone
has suggestions concerning replacement.
thanks in advance for your time and help.
-tom