Suddenly I'm reminded of the horrid stock
Commodore power bricks
 where the whole brick is epoxy.  I went to a lot of effort to dig up  
Ah yes, I've dismantled epoxy-potted modules before now. Painful idea. I
hope there's a special place in hell reserved for the manufcaturers of
such things :-)
  a good 3rd party brick for my C-64 that can be easily
worked on. 
I cna't rememebr what the C64 requires (+5V DC and unregualted 9V AC?)
but I think I would have designed and made my own replacement. And built
it in a propper, earthed, metal case with fuses on both sides of the
transformer.
-tony