Xpantastic!

Hi s!
there is nothing wrong with your xpander!
Simply the sustain pedal jack switch is stuck in the on position!
The remedies are:
1.Open the xpander and repair/replace the pedal 1 jack  or
2.dissable in the software the functionallity of pedal 1!
  Go to MASTER PAGE/MIDI/CNTRS/PEDAL 1 and use the rotary under pedal1 to assign any other CC value other than PEDAL 1, say 0 for example!
This will take care of it without the need to repair the input jack!

Best regards,Takis. 

--- In xpantastic@yahoogroups.com, Simon G <playthefivetones@...> 
wrote:
>
> that was a lot of really great information, Karl, thank you. presumably those capacitors are easy to find?
> 
> do you think the problem below could be a capacitor issue?
> 
> does anybody else had/ have a problem where VCA 2 is 'stuck on' some old notes...almost like a midi note is stuck on.i've tried the boot reset, all midi notes off (i'm quite convinced it's not midi related at this point), still there. always get a  tuning pass across the board, except one time where VCF failed (still sounded fine). i have not been able to duplicate that. doesn't seem to be isolated to one voice.  plays fine, sounds great (amazing), just have to leave vca2 at 0 which in most patches seems to make little difference. 
> 
> also i've been using the stuck VCA2 to make easy drones which i quite like.
> 
> i searched for the problem everywhere and found someone else who had posted with it  and got a couple of responses...one saying it was common on Jupiters (iirc) but no real solutions. 
> 
> can it be tuned out with a good calibration? considering everything else works should i just leave it alone? could i be making it worse by using it like this?
> 
> thanks 
> s
> 
> 
> 
> --- On Thu, 2/26/09, Karl <shire03@...> wrote:
> 
> From: Karl <shire03@...>
> Subject: [xpantastic] Re: xpander dac
> To: xpantastic@yahoogroups.com
> Date: Thursday, February 26, 2009, 4:43 AM
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
>     
>             
> 
> Hey Everyone,
> 
> 
> 
> I have been helping folks fix their Xpanders / Matrix 12s for awhile 
> 
> here. I can tell you that by far the most failed component is 
> 
> electrolytic capacitors. A 2.2 uF @ 50V coupling capacitor is used 
> 
> through out the analog voice boards. This capacitor will fail and 
> 
> cause numerous voice problems from failed auto-tune to no sound. The 
> 
> next part would be the encoders. Usually a good cleaning fixes this.
> 
> Next would be the VFD displays which are very hard to find. Steve 
> 
> Lanham is working on an upgrade for this one. 
> 
> see:
> 
> http://us.mc838. mail.yahoo. com/mc/compose? to=steve@ bendentech. co.uk
> 
> 
> 
> There have been a few cases of VCO ( 3374 ) and VCF filter chips ( 
> 
> 3372 ) failing. Not impossible to find, but expensive.
> 
> The DAC issue from Takis is the first I've seen of that part failing. 
> 
> Many times things can be fixed by simply re seating ( pulling out and 
> 
> putting back in ) the chips. This is easy on the Xpander because 
> 
> every integrated circuit is in a socket.  Finally, many problems are 
> 
> caused by cold solder joints. Simply re flowing the solder around the 
> 
> suspect part can fix this. I always recommend doing this first
> 
> before replacing parts.
> 
> 
> 
> I personally have fixed my matrix 12 (owned since 1987) several times 
> 
> This included cleaning the key contacts (typical of any keyboard) 
> 
> Several of the before mentioned capacitors.  An analog switch chip 
> 
> which had it's pin folded under at the factory. And finally, several 
> 
> 74HC14 Schmidt trigger chips which debounce the encoders.  
> 
> 
> 
> Soon ( when time permits ) I would like to make a better list along 
> 
> with part numbers etc. that we could all use to trouble shoot these 
> 
> wonderful machines. I have been collecting capacitors/ battary etc.
> 
> to recap mine. 
> 
> 
> 
> BTW If you have any software issues/questions Tony C. is the man to 
> 
> talk to, and PeWe is the best expert on sound design / functionality
> 
> ( on nearly any synth ) I have ever talked to. Actually, all the 
> 
> folks in this group are sharp characters ( they own xpanders :-) 
> 
> 
> 
> Best Regards
> 
> 
> 
> Karl
> 
> 
> 
> --- In xpantastic@yahoogro ups.com, Tony Cappellini <cappy2112@ ..> 
> 
> wrote:
> 
> >
> 
> > Not really, but my gear is very under-used compared to most.
> 
> > One voice is a little squirrly (occasionally) . Karl was nice enough 
> 
> to
> 
> > point me to which cap typically goes bad that causes my symptoms. 
> 
> Karl
> 
> > is very knowledgable about the Xpander.
> 
> > 
> 
> > I've wanted to recap my voice circuits, but haven't found someone I
> 
> > will trust my Xpander with.
> 
> > 
> 
> > For a long time that voice failed auto-tune now & then, but I 
> 
> coulnd't
> 
> > hear anything bad. Now I can hear it ;-)
> 
> > I bought a bunch of spare parts a long time ago when they were easy 
> 
> to find.
> 
> > 
> 
> > 
> 
> > On 2/25/09, Simon G <playthefivetones@ ...> wrote:
> 
> > >
> 
> > >
> 
> > > thanks for the info. if you don't mind me asking, has anything 
> 
> failed on your xpander?
> 
> > >
> 
> >
>