Yep. You can put the one from AFM in your other games to see if it works.

Usually DMD's don't suddenly die. Swap the DMD & see if that is it, but I'm betting it's the display driver board.

The problem more often is the HV section of the AV Board (top board).
You can test the HV quite easily with a DMM.
See: http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Testing_DMD_Controller_Power

If you find the voltages out, if you don't have experience reworking PCBs, send the board to a pro. They are too valuable to not be careful with. I can take care of it if you'd like.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

Have him replace the filter caps too.
160uf/150V.
220uf works fine
They sometimes fail and cause "rolling".
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://www.PinWiki.com - The new place for pinball repair info

Upgrade to ColorDMD and you will not have to worry about fixing that HV.

This month my SS display started to run out of gas and my TotAN display is presenting the same issue as yours.... One color dmd is already on its way and I'll have the tech here next weekend.... let's see, it will depend on the diagnosis...

The ColorDMD runs off on 12 volts, no high voltage.

Absolutely true, the High voltage on the DMD driver board is there specifically to power the plasma display. If you install a color DMD, I would remove both fuses from the DMD driver board to completely shut down the high voltage section.