THE OVEN TEMPRATURE IS NOT CONSISTENT.

Usually this is due to a bad temperature sensor. Sometimes it's due to a control board malfunction.

If you can get an accurate measurement of the oven temperature (which is not as easy as it sounds) you can do some diagnosis from the outside:

You need an accurate thermometer or thermocouple into a DVM. Make sure there are no obstructions in the oven (baking sheets, etc). Make sure you are measuring the temperature in the center of the oven cavity.

1. If the average measured oven temperature agrees with the display, the sensor is probably ok. The controller cycles the element on and off, at a rate that results in a correct average temperature. So you have to record the thermometer reading min and max over several cycles.

2. If the sensor seems ok from #1, it can be verified by disconnecting it and measuring its resistance. Should be 1080 ohms at 70F.

3. If the sensor seems ok, but the oven temperature is erratic, then it's probably a control board issue. We repair these at www.fixyourboard.com