I have an old Toshiba DVD Player and the remote control is not working. It does not have a visible battery cover so i don't know how to change the battery. The bottom half of this 9 inch remote has a sliding cover over some buttons but no battery compartment that I can see. Do i have to break off this sliding cover to expose the battery compartment? I don't want to damage it but it seems to be the only place where the battery might be hidden