Looking for manual for white-westinghouse built-in oven, model WB8502, serial no. 790800575. It's over 30 years old and we can't find the fuse box The oven does not heat, although there is a faint red light that goes on when we turn the dials. Would like to verify if it says where we can find the fuse box so we can check the fuses. thanks for your help. carmeladimatteo@hotmail.com