Don't let the clutter in the shop scare you away! I took my Yamaha keyboard to Teltronics for repair of the backlight in the screen. After searching "the world" via internet, I finally took it to their shop. Within 2 days they called with their solution. And one day later it was fixed. New LED backlight, designed and built by the technicians. Reasonable cost. No surprises. Despite the cluttered shop, I'd go back with any electronic repair. Thanks guys.