Korg Mono/Poly

Hello.

Just a few moments ago I was playing some music and all of a sudden my mono/poly stopped working.  I tried to flip the switch and nothing happens; no lights or sound.  (I didn't see or smell smoke)

I opened it up and the fuses are all fine, but the transformer was so hot that I couldn't keep my finger on it for more than a moment (even now, 15 minutes later it is still very warm).  
I used the service manual and checked on board 356 for voltages and none of them registered(5, 15, or -15).  

I'm not sure what to do now.  I'm guessing the transformer died, but how can I know for sure?  What would cause the transformer to just go out like that?  If it is the transformer, does anyone here have a spare or know where to find one?

Thanks,
Chase