We have a Kawai Concert Performer CP117 (Serial Number 7087862) digital piano that was gifted to us about 15 years ago. There seems to be a software issue that started almost a year ago and the piano won’t generate any sound. The screen also freezes on startup at the picture/logo which I assume contributes to the lack of sound. None of the lights on the buttons respond. We have tried restarting it, both with the power button and unplugging it from the wall for varying periods of time. There is a floppy disk that came with the piano, but inserting it doesn’t make a difference in how it starts up. The manual doesn’t have any guidance for a hard reset, only a soft reset through the menu, which we can’t access. It’s been in the exact same spot for the last 6 years or so. We connected with a digital piano repair company over the course of 8 months but they stopped responding and then shut down.
I’ve Googled and Googled and can’t find a way to somehow reinstall software. I don’t want to start physically taking it apart until I know what I’m looking at. Hoping maybe there are some answers here. Thank you!