The Yamaha keyboard device has a problem with the motherboard. It seems like it's shorted, and this issue has occurred twice. By God, I paid 2300 and lost 400 SAR on its repair, but the problem still persists. It works but messes up the playing, making various errors. I don't know if it's something wrong with me or how I use it. I have nearly lost half of its price, selling it now for 1800 SAR. And by God, I've already lost a lot, and it's slightly used. For serious inquiries, please contact me at 0535027875.