Master Volume Control Issue

Discussion relating to the Korg X-50 and microX

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FLi
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Joined: Tue Oct 21, 2008 8:33 am

Master Volume Control Issue

Post by FLi »

Hi All,

I have just got a second-hand Micro X (for free) and I've got an issue with the Master Volume control knob. It doesn't seem to work. There is volume coming out of the master outputs but its not controlled at all by the volume knob. This is true for the headphone jack as well.

2 things come to mind.

1.) The Korg was sent to me via courier and I live on an escarpment meaning the Korg had to a serious altitude change. So much so that it took an age for the screen to actually be usable. This seems to be fine now, but could this effect the circuitry using the volume control? or is it just bust?

2.) That there is a setting somewhere that disengages the volume control knob? this is grasping at straws but I do know that you can do this on some synths.

I'm hoping that its one of the above. I'm gonna open it tonite and get a voltmeter on the control to see if its working at all....maybe I need some contact spray or something ???

thanks
iMac 2.66 OS X 10.5.6, Digi003, Protools LE8, Live 6, KLC, KLC DE, Korg MicroX, Virus Rack, Juno 60, Yamaha CS01, Korg MS10, Korg Poly61.
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Bigs
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Post by Bigs »

I believe the volume knob is 100% hardware and cannot be disabled by software, so it must be broken AFAIK.
FLi
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Joined: Tue Oct 21, 2008 8:33 am

Post by FLi »

Okies so I took the MicroX apart and found out 3 things...

1.) There are a helluva lot of screws... :shock:

2.) The master volume knob is definately bust...check it with a voltmeter and it does nothing besides hang at half voltage....which is weird in itself but anyways...guess that needs to be replaced. :cry:

3.) The pitch wheel wasn't reacting due to a loose wire internally...fixed that at least.
iMac 2.66 OS X 10.5.6, Digi003, Protools LE8, Live 6, KLC, KLC DE, Korg MicroX, Virus Rack, Juno 60, Yamaha CS01, Korg MS10, Korg Poly61.
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Bigs
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Post by Bigs »

Well you can't really complain if you got it for free, can you :)
FLi
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Joined: Tue Oct 21, 2008 8:33 am

Post by FLi »

exactly ;)
iMac 2.66 OS X 10.5.6, Digi003, Protools LE8, Live 6, KLC, KLC DE, Korg MicroX, Virus Rack, Juno 60, Yamaha CS01, Korg MS10, Korg Poly61.
FLi
Posts: 20
Joined: Tue Oct 21, 2008 8:33 am

Post by FLi »

Sorted...replaced the pot and now its fine :)
iMac 2.66 OS X 10.5.6, Digi003, Protools LE8, Live 6, KLC, KLC DE, Korg MicroX, Virus Rack, Juno 60, Yamaha CS01, Korg MS10, Korg Poly61.
FLi
Posts: 20
Joined: Tue Oct 21, 2008 8:33 am

Post by FLi »

While I replaced the pot I decided to replace the knobs as well...the Micro's are cheap and nasty so I spend a whole $3 and bought some nice Moog lookalikes :P strangely the pots feel a lot more solid now as well...

Image

Now to replace the nasty plastic ends with some nice wood ones :)
iMac 2.66 OS X 10.5.6, Digi003, Protools LE8, Live 6, KLC, KLC DE, Korg MicroX, Virus Rack, Juno 60, Yamaha CS01, Korg MS10, Korg Poly61.
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Bigs
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Post by Bigs »

Ooh, cool mod. If I weren't afraid to take my beloved synth apart (I always have screws left over after putting things back together) I would do that too. But I guess I can always do it when one of the factory pots breaks.
FLi
Posts: 20
Joined: Tue Oct 21, 2008 8:33 am

Post by FLi »

just you wait till you see the Woodends :)

Here's my MS10 I modded put woodends on...waaaaaaaaaaaaaaay better than the manky plastic ones :)

Image
iMac 2.66 OS X 10.5.6, Digi003, Protools LE8, Live 6, KLC, KLC DE, Korg MicroX, Virus Rack, Juno 60, Yamaha CS01, Korg MS10, Korg Poly61.
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