John Krogh Posted January 1, 2021 Share Posted January 1, 2021 Hi all. I've had my PX-5S for a several years and it's worked great. However, in the past couple of weeks, I noticed the mod wheel wasn't sending smooth, consistent messages, especially in the lower range. For example, when opening the mod wheel (increasing the amount of CC1), the amount of CC would fluctuate. This was a minor annoyance that I thought I could get around by assigning one of the sliders to CC1. This worked for about a week, but now the slider is sending random CC1 messages as I'm operating the slider. Has anyone else had issues with Mod Wheel (or other CCs) starting to "fail"? Perhaps a known problem? Thanks for any insights! Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted January 1, 2021 Share Posted January 1, 2021 Hi John. How often do you use the wheel? If not often, it's probably just dirty. It's a basic self cleaning potentiometer, which needs to be moved occasionally so it can stay clean inside. Try running it up and down several times full throw, see if that helps. Quote Link to comment Share on other sites More sharing options...
John Krogh Posted January 1, 2021 Author Share Posted January 1, 2021 Hi Brad. Thanks for the reply. I use the wheel almost every day, multiple times a day, and I've never gigged with the keyboard. It's been in my studio for the past 3+ years, so a clean environment. Also, there are issues with CC1 when I assign it to one of the sliders, so I don't know that the issue is necessarily specific to the Mod Wheel, but it could be. I'm a Logic Pro user, and in Logic, the transport will show incoming MIDI data. I can see that small changes in CC1 are being sent when I'm not operating either the Mod Wheel or the slider I've assigned to CC1. However, it isn't constant, it's sporadic. The PX-5S is the only keyboard I have connected to the computer, so the data couldn't be sent from another device. Other thoughts? Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted January 1, 2021 Share Posted January 1, 2021 Another possible diagnostic tool would be in the pedal inputs. They only accept simple on/off switches, so erratic operation wouldn't result in small changes in data. You can assign CC1 to a pedal to check it. Quote Link to comment Share on other sites More sharing options...
John Krogh Posted January 3, 2021 Author Share Posted January 3, 2021 Hi Brad. I'm not sure what that would help diagnose, but attached is a quick screencast of the behavior I'm experiencing. You'll see that I'm operating the slider in this case, which is sending CC1. Then I stop moving the slider, and moments later, new CC1 messages are sent resulting in my sound changing. Thoughts? Mod Wheel Error.mp4 Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted January 3, 2021 Share Posted January 3, 2021 Unfortunately it may be necessary to have a technician look at the keyboard. It may need some internal servicing. Quote Link to comment Share on other sites More sharing options...
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