I have an ancient Korg X5 keyboard. Today, it displayed a "Low Battery" warning, so I purchased a new lithium CR 2032 battery and watched a youtube video showing how to replace the old battery. Unfortunately, my keyboard is older than the one shown in the video, and when I opened up the case, the old battery seemed to be attached in a way that made removal difficult if not impossible. The old battery seems to be welded into place (though perhaps this is an illusion). Has anyone encountered a similar problem, and does anyone know how to deal with it?