Brad Saucier

What happens whenever you go into the function menu and adjust touch response to various settings from off to light (1), normal (2), heavy (3)?

They are grading numbers, since the weights are different for different keys. You'll need to match the same number for replacement.

You are combining steps from two different processes (recording a MIDI song + exporting to USB) into one. That is not correct. To clarify how the system works, the built in Audio and MIDI recorders behave differently. Audio records directly to USB flash drive. MIDI is recorded directly to internal keyboard memory. You will never need to specify a USB folder during the MIDI recording process. You do not need to mount a USB flash drive to record MIDI. I would not mount a USB flash drive until you are familiar with the MIDI recording process. Step 1. Create a MIDI recording. Play it back to make sure it is what you wanted to record. This will confirm it is stored in keyboard memory. Stop playback. Step 2. Insert a USB flash drive. Step 3. Enable MIDI mode by holding FUNCTION and pressing F6. Step 4. Input the user song number you wish to export by holding the start/stop button and pressing the number keys. Hint: 61 through 70, see the attached screenshot of the user manual for details. Step 5. Specify song export format as SMF and execute by holding the function button and pressing the sequence G1 followed by C. The sound mode lamp will flash and then illuminate sequentially during this process. Lamps will go dark when complete.

Exit the edit menu to return to the main screen before pressing write>stage setting.

Only difference is the number of keys. 76 vs 61

Blow air between the problem keys to clean and reset the sensors.

Long pressing the octave button opens the octave menu. With the octave menu open, short pressing the button should cycle through any active upper and lower parts and then exit the menu. Have you confirmed split mode is still active while in the octave menu, to make sure something funny didn't happen to the layer button?

The CT-S series does not feature rhythm editing. The CT-X3000 and 5000 do have that feature.

What is your budget? All of the current Privia models have high resolution velocity.

Sounds interesting. Perhaps the MIDI Implementation manual can be useful. It is quite detailed. https://www.casio.com/intl/support/electronic-musical-instruments/manual/?model=LK-S250

The file on your flash drive will be named "New01" plus the file extension.

It's not possible to store MIDI files on the keyboard. Your files are stored on the flash drive only. They play directly from the flash drive.

More detailed information in this article from Music Merchandise Review, a great article. https://mmrmagazine.com/site/gear/keyboards/casio-updates-celviano-ap-digital-pianos-with-gorgeous-new-style-rosewood-finish-and-inspiring-hamburg-grand-tone/

First step is to confirm you have successfully recorded a song with the MIDI recorder. Do this by playing back your recording without a USB flash drive attached to your keyboard. If you hear your song playback this way, you are ready for the next step. This confirms your MIDI recording is stored in keyboard memory and ready to be saved to a USB flash drive. Can you post a video of where you have issues? It would be much easier for us to see exactly where you are missing a step.

Actually it's past 10 years now, but they still have new ones in stock. It's not over yet and it's still a great keyboard. Keep the faith.

You can name the file during the process of saving it to USB flash drive, after pressing save in the media menu and selecting the type of data and corresponding recording.

CDP-S90 and CDP-S100 are the same keyboard with different model numbers for retail purposes. Double check that you have downloaded the proper manual. CDP-S100 and CDP-100 are two entirely different keyboards, without the "S" is much older. I know, it's confusing.

Here's more news from the press release. https://www.casio.com/intl/news/2024/0125-ap-750/

I think the piano tones sound really good. It features an all new Hamburg grand piano tone, which I feel like is huge news moving forward. We might see a version of this tone trickle down into other models in the future.

The battery is soldered to the main board, buried deep inside the keyboard. If I recall correctly, it's a CR2032 tabbed lithium coin cell battery. You can find them online easily. That battery only has an impact on stored user data like tones and rhythms. It shouldn't have any impact on power up. Your power button may need cleaning or repairs. Keep in mind it's a timed power off button, meaning it requires holding down for about a second to turn it off. That's normal as it's designed to prevent accidental powering off from hitting the button briefly. The power button is recessed for the same reason.

Have you tried using the wireless MIDI connection or is this entirely wired? I'm not aware of anyone else who has run into this issue.

A very low level of white noise normally not heard without carefully listening close to the speakers is completely normal.

You might try sources from Casio's website regarding their parts and support network in Europe. https://www.casio-europe.com/euro/support/product-repair/musical-instruments/#tab

This is entirely with an iPad? Or have your tried with a different device as well, like a PC or Mac?