How low does the temperature drop?Preheat overshoots quite a bit and then it takes a while for the oven to drop to the actual setpoint.If you don't touch it does it go back to it's original "off" temperature?
That's new. 8-)Can you get the diagnostic code(s)?Press "off"Then press * OFF* OFF * STARTDoes it show anything in the left 2 digits and right 2 digits?
Below is a link to a service manual which may be useful to you.https://www.appliancejunk.com/forums/index.php?action=downloads;sa=view;id=140