On Fri, 18 Jun 2010 17:57:37 +0200, Geir Holmavatn ǝʇoɹʍ:

Hi,

Hac anyone experienced or repaired a Yamaha synth with this symptom? I
suspect it might be a loose keyboard connector or something.

Thanks for comments and suggestions.

regards Geir

Old Korg analog synth had similar problems located on one of 4 gate
boards but I seriously doubt any such architecture exists in something
this modern.