At 10:49 AM 6/24/04, you wrote:
Regarding the Pro-One:
First, it helps to narrow down the problem.
No offense, Cory, but are the controls set to produce sound? (Ionce had a perfectly functional ProOne brought to me for service that hadall the mod switches set to produce zero sound). Trying out some ofthe test patches in the manual would eliminate this possibility.
Next, have you checked the output voltages on the back panel jacks (1volt per octave keyboard control, and positive voltage from the gateout)?
After that, have you tried sending external audio through the filterinput jack? It's possible for an oscillator to fail, but rare for BOTH todie at the same time.
Are you willing to open up the unit & test the power supplyfeeds? The ProOne requires a heavy +5 load for the digitalcircuits, and plus & minus 15 volts for the analog. Any ofthose missing or out of spec can disable the synth.
Check those things out, & we can go on from there.
~GMM
----- Original Message-----
From: "Rory Mc Donald" <rorymcd@...>
To: <oldsynths@yahoogroups.com>
Sent: Wednesday, June 23, 2004 7:32 PM
Subject: [oldsynths] Service question on Sequential Pro-One andWaveStation
> Hi all:
>
> I have a Sequential Circuits Pro-One, with the original box andmanual.
> Unfortunately it does not put out any audio.
> It triggers the gate and I get some sort of audio bleed (samefrequency
> no matter what I do).
> Any thoughts on how to go about repair of this unit?
>
> 2) I have a Korg Wavestation (original) in nice shape with allthe
> manuals etc but there is one problem with it:
> It plays fine except the octave directly below middle C doesnt workat
> all. Is this a octave divider problem, or what?
> Anyone who knows this unit please advise- I can solder and swapparts
> but dont know what to look for at the moment.
>
> Regards
> Rory McDonald
> OldSynths Moderator
> rorymcd@...
>
>
>
>
>
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