Both ovens worked fine on Thanksgiving day, 11/28/2013. Returned home 4 days later to blank display so don't know when it happened. Both oven lights are on when doors are opened but no functions work. Checked circuit breaker and motor or fan runs briefly but then stops. Do get beeps when I press keys. Have tried to set clock but totally blank display. Do hear an occasional 1 beep even when we're nowhere near the ovens but still nothing. The ovens were not being cleaned. Have read owners manual to no avail. Don't want to pay for service call if I don't have to particularly since I'm not optimistic. Concerned about parts being available after reading several posts. Any ideas that my husband could check?