hello buinu
i checked the batteries also for any orrosion but every thing looks fine also contacted mike martin and he suggested for me to take my k to be serviced then i spoke with someone at sweetwater that suggested to check the small batterie that looks like a small watch batterie inside the keybord not the AA ones and i have to say i was pretty surprise to know that there was such batterie inside so i went ahead and opened the board but couldn't find any batterie inside does any body know any thing about that .
by the way i'm very use to open my keybords without any problem and i 've chaged that type of batteries inside my korg t3 couple of time but i can't find any batterie like that one inside my k2vx any where.
any help
thanks
eddy