My good old micromoog got out of tune. 
How can I fix that?
This link give some technical information and manuals for download! 
http://www.fantasyjackpalance.com/fjp/sound/synth/synthdata/07-moog-micromoog.html
Let the Ocsilator heat up after about 5-10 minuted on a dry (not overly humid) day and then get another keyboard or a pitchpipe or even a cheap guitar tuner and use that