Korg Stage Piano SP250

[grooveunit]

I could use a schematic for a Korg sp250 if anyone's got one to share. Korg is being less than helpful. Pretty sure it's the slide pot volume control that's bad, but it's a weirdo and I can't get a value with my meter. Thanks

[dmeek]

On this model, when you flip the keyboard over to remove or re-install the bottom, use supports at each end.
The slider shaft can be pushed in by the weight of the keyboard, breaking the slider. It happened to me.

Korg SP-250 sm.pdf

[grooveunit]

We are fairly sure that this is what happened, as a function of a homebuilt carrying case. I have suggested improvements. Thanks a million for the manual.

Did you have any luck sourcing that slide pot outside of Korg?

[dmeek]

I believe the slider is a stereo 10K linear made by Alps. The same type used in Yamaha, Roland etc.
I don't remember if I replaced it or repaired it. If you're lucky you might be able to fix it.
Mouser Electronics sells Alps though it's hard to find the exact physical size.

alps sliders | Mouser Electronics, Inc.

[Enzo]

If the slider knob as pushed into the pot and shoved the bottom out, usually we can repair that. I remive the slider, then I can often reform the little tabs that hold it together to put it back to rights.

[grooveunit]

Thanks to both of you, this is exactly the advice I needed. I'll attempt a repair and get a replacement on its way.

[grooveunit]

I was able to repair the slider, it didn't have any visible damage, but I took it apart and tweaked the contacts, put it back together and it works. I think I'll order a replacement slider and velcro it to the inside of the keyboard, for next time.

I deeply appreciate the advice. Y'all came through with meaningful help when the manufacturer basically told me to go crap in my hat. My customer and I are grateful.

[shareator]

Hi all, please reload the link, thx in advance

[Jazz P Bass]

Here you go.

[bsco]

I just had one of these units and I had to order a volume slider for it as well.....no sound from the speakers and line out.......when you jump out the red and white wires from the volume control. you get sound when you strike a key....but of course no control of volume....I will keep the old one and see if I can repair it...if I do I will keep it in the hope that one day it might get me out of a jam....

[doctor]

You can purchase it here: Korg LP350, SP250, PA50, EC120, EC150, IS35, IS40, IS50, PA1X, PA80, SP300 Volume Pot 10Kx2, 530000000346, MP5012001 | Parts Is Parts - Guitar Parts, Amplifier Parts, Korg Keyboard Parts

[bsco]

You can purchase it here: Korg LP350, SP250, PA50, EC120, EC150, IS35, IS40, IS50, PA1X, PA80, SP300 Volume Pot 10Kx2, 530000000346, MP5012001 | Parts Is Parts - Guitar Parts, Amplifier Parts, Korg Keyboard Parts

Thanks doctor....already have it ordered.....