Well when I punch up bank 2 patch 2 or bank 2 patch 7 or bank 3 patch 4 I get nothing through my speakers. But when I play them through my headphones with the volume all the way up I het a faint string like sound from all three of these patches. The buttons work fine just those three patches. Like there is an internal curcuit problem or the pacth got erased or what I have no idea?

Other then that it works fine. Well apart from the control panel on the left side of the keyboard is a little loose.