[sdiy] Oberheim Matrix6r Problem

[Carbon111]

Hi Folks,
Anybody ever come across one with an entirely dead right channel. Its 
not the output jack, the headphone jack shows the same behavior. Checked 
the "stereo" setting in the Master section - all is well. The "upper" 
channel in every split is silent also - I'm assuming this is the same 
problem. Any suggestions on where to start to look.
Very Best Regards, James
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http://www.carbon111.com