You might need to replace the back light circuit board (please send us an email directly to KetronUSA@AjamSonic.com) so we can arrange to send one to you.
Thanks ... AJ
One last question: Any thoughts on the screen getting black during gigging?
I was playing for 2 hours just fine, the my screen turned black. Restarting the keyboard, everything was fine again for a while, the again black.
Is it heat related?
It seems that it was not entirely black, just like highly lacking contrast.