OldSynths

Thanks for the input ;)
Yes I checked to make sure it was set to produce sound (I have a number 
of modulars) but I will check the output jacks and try the ext IN.
Seems like there is something fundementally wrong with the output, 
since I get nothing, but the GATE led lights when keys are pressed.
Also will check the PS feeds too.

Regards
Rory

On Jun 24, 2004, at 11:23 AM, greg montalbano wrote:

>  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?  (I once 
> had a perfectly functional ProOne brought to me for service that had 
> all the mod switches set to produce zero sound).  Trying out some of 
> the test patches in the manual would eliminate this possibility.
>
>  Next, have you checked the output voltages on the back panel jacks (1 
> volt per octave keyboard control, and positive voltage from the gate 
> out)?
>
>  After that, have you tried sending external audio through the filter 
> input jack? It's possible for an oscillator to fail, but rare for BOTH 
> to die at the same time.
>
> Are you willing to open up the unit & test the power supply feeds?  
> The ProOne requires a heavy +5 load for the digital circuits, and plus 
> & minus 15 volts for the analog.  Any of those 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 and 
> WaveStation
>
>
>  > Hi all:
>  >
>  > I have a Sequential Circuits Pro-One, with the original box and 
> manual.
>  > Unfortunately it does not put out any audio.
>  > It triggers the gate and I get some sort of audio bleed (same 
> frequency
>  > 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 all the
>  > manuals etc but there is one problem with it:
>  > It plays fine except the octave directly below middle C doesnt work 
> at
>  > all. Is this a octave divider problem, or what?
>  > Anyone who knows this unit please advise- I can solder and swap 
> parts
>  > but dont know what to look for at the moment.
>  >
>  > Regards
>  > Rory McDonald
>  > OldSynths Moderator
>  > rorymcd@...
>  >
>  >
>  >
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