Sequential circuits samplers

Recently I have taken apart my P2002 for cleaning (some front panel 
buttons were sticky, and replaced a broken Disk drive), but now when I 
have re-assembled everything I noticed that the PSU unit make 'strange' 
noise and the p2002 does not turn on. I belive that the PSU has taken 
some damage when I cleaned the sampler. Does anyone know where to get a 
new PSU? I would be greatful for an answer.

Thanks in advance

Marko