[sdiy] SOLVED RE: AX60 Voice Issue

[Tom Wiltshire]

How's that work then?

By which I mean; how does a blown transistor in the chorus circuit come to generate the symptoms you reported?

(Just curious)

Thanks,
Tom

On 28 Aug 2012, at 18:57, gregory zifcak wrote:

> 
> blown transistor (TR2) on the chorus board.
> 
> ----------------------------------------
>> From: zifcak at hotmail.com
>> To: synth-diy at dropmix.xs4all.nl
>> Date: Mon, 27 Aug 2012 16:55:48 -0700
>> Subject: [sdiy] AX60 Voice Issue
>> 
>> 
>> Hey all,
>> Strange behavior from this AX60:
>> In split modes 2-4 and 4-2, all voices work. I can simultaneously hear 6 pitches when I hold 6 keys. the balance slider functions normally, mixing between the two patches.
>> In single mode and in split modes 6-0 and 0-6, only voices 5 and 6 are sounding. I can hear the other four faintly in the background. I have checked the CV going to the VCA, and it's a consistent 4v across all CEM3394s.
>> The signal paths for the mixed voices are split into two groups; 5 and 6, and 1 thru 4. What I don't understand is why all voices would be present in split modes but not in single mode.
>> Any ideas?
>> Service manual can be found here:http://manuals.fdiskc.com/flat/Akai%20AX-60%20Service%20Manual.pdf
>> Thanks in advance,Greg
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