Recently acquired and repaired an Roland MT-200. It is basically like having an SC-55 sound module with the ability to play midi files jukebox style from a floppy disk drive! Aside from not having MT-32 support, it covers the rest of the early 90s era DOS gaming Midi needs. Also this module works great with DosBox, ScummVM, and the X68 Sharp x68k emulator through the use of a Roland UMONE mkii usb to midi adapter set.
For those interested, I picked up my MT-200 listed in as is condition for $40 shipped. It ran another $40 for a brand new set of the Roland USB - Midi cables. Overall, I'm really happy with it!
Settings and Instrumentation was all goofed up. A factory reset from the hidden diag menus took care of this.
Floppy drive would light up but not read or recognize a disk had been inserted. Turned out to be a bend pin on the floppy interface connector on the mainboard. I'm not the only to have gotten inside this module. Also cleaned up the floppy read/write heads as they were pretty nasty as well. About an hours worth of time to fix given I'd never been inside one of these before.
Edited by CrossBow, 05 February 2018 - 12:27 PM.