Display went blank after beeping. turned power off at breaker to try to reset. after an hour turned power back on, display was still blank. turned power off again and waited 2 days. turned power on and display read PF and time. used the oven, worked fine. then heard beeps and the display went blank again. turned off power to breaker and turned back on in 1 day. again PF and time was displayed. again used oven, worked fine. again heard beeps and display went blank again. display did not go blank until after the oven was turned off for about 30 - 45 minutes in both cases. no error messages were displayed.
I read about replacing electronic control board, control panel or thermal fuse.
please help. thank you in advance.