"Turn off power to oven at switchboard. unscrew oven from wall cabinet (2x screws), slide onto table. remove top metal cover shield (5x torx screws). take a photo. gently ease controller board by pulling back - there is raised pin connection on the left hand side just above the locating pin - dont twist - then carefully ease the retaining clips and plastic retaining body from controller board. remove flying connection leads, reattach to new controller board. remove plastic film shielding lcd and revers to process. once all reassembled and powered up the unit will then go through a 4 hr recallibration cycle."