ACHTUNG

This frigging sucks. A $4 pot screws up a $300 keyboard. Very disappointing.

That's what Brad Saucier wrote me to do as well. Frustrating a $4.00 pot screws an entire instrument up. Disappointing to be sure.

I do not, but since it can be used for other things I'm not object to buying one. Are you certain that turning on other features to control the volume on other things isn't the problem, and that returning to the playing mode or whatever won't alleviate this? Lots of people are experiencing this as I comb the web.. volume pots don't generally go bad this quickly. I bought it used but it was still in the box - evidently my friend used it twice before he unexpectedly passed away, and I watched two quick videos where the volume knob clearly worked...

Okay I performed the factory reset as prescribed on page EN-118, it said "wait" while it reset, and when it was done there was no difference.

Sorry Brad, yes the main Volume knob atop the deck, just right of the red Power button. I'm trying to find the system reset procedure you referred to in the manual here. Y'know I really hope there's a fix to this; I bought it from a friend who has since passed away, and as a disabled vet I don't have the $$ to spend freely! For a company like casio who has built an empire on their ability to excel in sound, its pretty ironic that the ability to control it doesn't work. Still looking for reset procedure...

Not yet, because others have said it didn't work but im willing to try!

Same issue here. Strange, I hear it and it sounds great but I can't control the volume up or down. I'm trying to find whether there's a control lock anywhere...