SL-5500 Pictures of PCB

I'm looking for some pictures of the insides of a SL-5500.  I have seen
the ones of the SL-5000, but they don't have what I want on them.  More
specifically I'd like to know the part number for a switching voltage
regulator IC on the main PCB.

Also I'd be interested in buying a broken SL-5500 to get the parts I need
to fix mine.

Thanks,
Ryan