Btw I haven't been cleaning the inside of electronics before. What do I need? I don't want to use anything that suddently shows to be destroyng the contact.
And a quite different question now we are at the D-50 subject. Can anybody say what year a specific unit was produced by looking at the serial number? Since it was produced from 87 to 89, I was born just in the middle of the D-50 years. It could be interesting to find out who saw the daylight first... me or the synth