Schematic or info needed for sountech mc-100 power module

[gearhead63]

Does anyone have a schematic, or know what transistors are used on a soundtech mc-100 power module? I have an older wedge monitor (12") that had the power cord cut when i got it. Fixed that and plugged it in. It powers on but no sound. Someone replaced the transistors, all 5 that are mounted to the heatsink. I don't know if they are the proper units or not.
Any info would be great!