I have an Advantium 240 Wall Oven (it's a microwave but it opens like an oven). For the last couple years I've been having a problem when using speedcook that it will stop cooking and reset the display as if I had never started cooking. If it is going to reset in the first cooking cycle it will usually happen within the first 5 seconds of cooking. This happens about 60% of the time but sometimes it will take 4 or 5 tries to get it to work. When you are using a setting that pauses for you to turn the item over it will almost never restart from that point with out resetting itself. That makes me think it could be heat related but I've had it reset at the beginning of cooking plenty of times when it hadn't been used for hours. Also, 99% of the time this happens on speedcook and the microwave is fine but I have had it reset a couple times when microwaving.

It seems that most of the problems listed on this forum are for the 120 models that seem to completely lose power. Mine just resets. There is no delay before I can try to restart it. It might not be related, but the clock also has a mind of it's own. It seems to reset to random times (not 12:00). We gave up on resetting it a while ago so I'm not sure how often it changes.