Neither top or bottom element would heat at all. Everything else worked, clock, timer, etc. Turned off breaker. Removed oven from cabinet. Did not disconnect service wires. I just set the oven on a small table next to the cabinet. Removed control panel cover. Removed 4 screws from board. took picture of wires connected to board. Removed wires. Reconnected wires to new board and reattached with 4 screws. Replaced cover. Reinstalled oven back in cabinet. Turned on breaker. Set clock on oven, tested bake and broil. both worked.