I'm diagnosing a Data East version 2 power supply for a friend from a 1990 Phantom of the Opera. He is shipping me the board. To troubleshoot the 5v supply on this board can I connect it to the transformer or board set of a Data East version 3 or Sega version 3b game? Both being DMD machines, the Sega being a jumbo 192x64 DMD game.

I found this from Pinwiki. The only difference between 520-5000-00 and 520-5047-00 seems to be the high voltage display circuit. So supposedly, I can swap these out and leave the high voltage display power unplugged. I'm asking to test for a friend's Data East Version 2 game using a Version 3 power supply, as I don't have any Version 2 games with the 100% correct power supply.

Part Number 520-5000-00
This power supply was used on games with alphanumeric displays such as "The Simpsons". It creates both +100 and -100 volts to operate the plasma score displays. Typical problems with this board include:

Burned general illumination connections and connectors.
Pins on CN1, called a "wafer" connector, burn. You can safely exchange the unused pins at positions 5 and 8 for burned pins in a pinch.
The fuse clips are brittle, and fracture easily or lose their tension, a common theme across all Data East power supplies.
This power supply is compatible with the D-8345-XXX power supply from Williams and vice versa.

Data East 520-5047-00 Power Supply

Part Number 520-5047-00
This power supply was used on the five games (Checkpoint, Teenage Mutant Ninja Turtles, Batman, Star Trek, and Hook) which used the smaller 128 x 16 DMD. One thing which makes this power supply stand out at a glance are the two large 10W power resistors installed on the unit. Other things which make it different from the power supply used with a "standard" 128 x 32 DMD are:

The use of MJE340 and MJE350 high voltage transistors versus MJE15030 and MJE15031 transistors.
While compatible, the -00 should not be used as a replacement for the -01 power supply. The -01 is capable of delivering higher currents and is more robust.