Vintage Simmons Drums (UK) Users Group

Hi,

I want to sort out the mystery with the PSU-part in my MTM's so if any 
of you have the schematics I'd love a copy.

Any knowledge about software versions would also be appreciated. My 
units run v.3 (serial 114) and v.4 (serial 800).

While inside I plan to change the battery too. One is still original and 
looking pretty crappy too... Will get a new one + holder next week.

thanks,
-- 
electronically yours, jesper

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