adventures in DIY music

Tuesday, 9 May 2017

Roland MKS-50 repair

Problem: no lights, no sound.
Suspect the PSU of course!
Inspection: hairline cracks in the joints near where the three power transistors are soldered to the main board - very common problem in old synths due to repeated thermal stresses.
Fix: re-solder all the joints in that area.

Power regulation area top right
 
Heatsink






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