Roland KR 75 piano keyboard everything worked great until i transported it in my truck and had a strap put on the keys that pressed down too hard on them now some of them won’t work. I made a video so you can see which ones don’t.. I don’t have the time to figure out how to replace them. Great deal for someone who knows how to fix one of these things but if you want to spend an hour or so trying to figure it out there should be step-by-step guides via AI or YouTube on how to repair Please text 801-928-9049 Salem