Vintage Synth Repair

Greetings,

My friend has a Fatar MP-1 MIDI pedalboard where the top few notes won't 
trigger.  The long PCB behind the pedals is missing some springs and 
diodes.  Can anyone help with technical info like service docs?  Fatar 
only has a one page PDF of the users manual on-line and have nt 
responded to my request for help.  Does anyone have a non-working MP-1 
they'd like to unload for spare parts?

Cheers,

Bill