okay lets try a few things, first lets see if the control is locked out.
The control can be Locked
Out by pressing Setup and then 4. When
locked "Control Locked" will be displayed and
scroll twice. Press Auto Set to toggle
between Locked and Unlocked. The control
lockout will not lock out the timer, clock,
setup options or oven light
next if that doesn't work see if this is in demo mode.
The control can be placed in a
sales demo mode by pressing Bake and Cancel
keys for 3 seconds. The demo mode can be
exited by pressing any key. This mode will
activate the display as if the unit is operating
without energizing the heating elements
let me know if either of them do anything.