Question about Music
If the unit is under warranty make use of it.
If this is second hand, then open unit and look for a connector or cable that might be ajar.
The keys are often scanned in a matrix so a single wire will kill a particular note.
IF THIS is a tube organ or a vintage unit, is suspect one of the tubes has failed. They often had seperate oscilators for each note of the 12 so a single oscilator being dead will kill a particular note.
Note that often the tubes used are 12AX7, 12AT7, or 12AU7 and these will have TWO heaters glowing in each if they are not burnt out.
Posted on Feb 08, 2010
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Posted on Jan 02, 2017
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