OBERHEIM SYNTH

or, the 5 v rail voltage could actually be low, which is the rail that 
supplies the CPU/digital board on the Matrix.

----- Original Message ----- 
From: "jim finch" <jahg88@...>
To: <oberheim@yahoogroups.com>
Sent: Friday, August 03, 2012 8:07 AM
Subject: [oberheim] Re: Oberheim Matrix 6, Dead?


You didn't mention how you were reading the powersupply voltages-but I 
didn't read the whole thread.If you use a O-scope you can see what is 
actually there,not just the D.C component. Most likely there is garbage 
riding on the +5V rail making the digital components see it as logic level 
shifts.