OBERHEIM SYNTH

hi, i have the same problem my Matrix 12, somebody told that I have to  
change old electrolytic caps with new, becouse they could change their  
value during the years. I didn't try it yet, but maybe it's the  
solution.
Simon


Il giorno 17/gen/14, alle ore 09:21, <joseph.redhemption@...> <joseph.redhemption@... 
 > ha scritto:

> [Attachment(s) from joseph.redhemption@... included below]
>
> I have recieved the new dac, put into place, made calibration but  
> still same problem.
>
>
>
> I have attached scope picture of the 5V supply, U903_pin4 and  
> U904_pin2 to show signals.
>
>
>
> There is this kind of burst on the 5V supply.
>
>
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> The signal on U904_pin2 look awfull.
>
>
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> Any idea what could be wrong?
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>