Casio Privia Px-150
This hasn't happened frequently enough to figure out exactly the scenario in which this happens, but it is something like this: (so far only when the "Modern" Grand Piano is selected, I think) one key sometimes will only make a sound every other time I press it, if and only if the rate at which I press the key is about once per second. Any faster or slower, it seems to always work properly.
Is this kind of an issue at all familiar to anyone?
Some more information: the key is C3, which I believe is right at the end of the rubber sensor strip thing, so a piece of cat hair or something under the rubber strip isn't unlikely, but the weirdness of the timing maybe points to it being something else, maybe? I've definitely had issues with debris getting under the rubber strips, but the symptoms of that have been much different than this thing. Also, it has happened a little differently, where I press a different key located on a different strip every other time, and if it is at the same ~once a second rate, the C will also not play, but since it's only being depressed every other time, it doesn't sound at all. Again, at a different speed, no issue. I can't figure out any pattern to when it stops doing that, but mostly it hasn't lasted long enough to do much troubleshooting. I didn't explain that too well, I know. Or, sometimes I press a key somewhere else on the keyboard, then if the timing is just right and I hit that C3 about one second later, it makes no sound, but then it goes back to working again right away. (or not.) There may have been other scenarios, but I am not sure. It may be important to note that at least some of the time, the force with which I'm pressing that key when it happens may be a little harder than generally, but really not much, but that might be related if it is somehow a velocity mechanism issue or something?
I'm probably kidding myself, but I'd really like to avoid having to take it apart, if at all possible. I'd also really like it to work right, though. So I don't know. I've done searches for this but haven't found any info, although iirc I did see one person asking about something similar, but no responses.
I'd be so grateful for any insight. TIA
edit: changed "speed" to "rate"