Yes, this happened to my KL88. I contacted support, and they sent me a replacement LCD circuit component. In my case, I didn't have the new version so they ended up sending me a new mainboard as well. I also had a great deal of trouble getting the outer casing back on because the ribbon cables are hot glued down at the factory, and once those are removed, it's very hard to keep them away from the keybed. Anyway, after about six months, I was back on track.
Word of advise -- make sure they know which version of the main board you have, and let a pro tech do the work!
