Booted up the K1 practice "organ" (32-key AGO pedalboard, MIDI encoder from Sound Research - nothing fancy, but less expensive and lighter than an actual practice organ), and 80% of the patches were gone, replaced by "SINGLE K-1" or "MULTI K-1" depending on selecting [SINGLE] or [MULTI]. Cobbled together a patch I could use for practice, shut down. Today, all the patches are gone.
I did a quick search and didn't find this happening to anyone else in the group. My best guess is that the internal battery (original equipment, btw) is dead and needs replacement.
I'll order a battery anyway, and restore the defaults when time permits. Just inconvenient that it happened this close to Xmas, when home practice would be helpful.
Has anyone else had this happen? And did you refit the battery pack to take a normal 2032 cell, rather than the cell with "legs"?