https://www.youtube.com/watch?v=ZG-h4xUG2yA
In the video you will see how I click on the PLAY button, and the HOLD button automatically turns on. it should not be. I wrote in support. They answered, perhaps you need to disable the midi channel or update the firmware. It did not help. After a month, I still decided to disassemble the synthesizer myself. Perhaps garbage in the button or grease. It’s clean inside. I snal play button, it cannot be removed, now I can’t insert it back. Now the button does not work and the light does not light. Maybe somewhere inside the button is stuck. Forgive help and advice.