Replaced two thermal cutouts inside built-in microwave oven. The most difficult part of the repair was uninstalling/re-installing the built-in unit and removing/replacing all the screws for the cover. Additionally, tracing down the open TCOs was a trick without any diagram. The TCO on the top of the cavity was easy, but this is the first time I've seen a TCO mounted on top of the mag (partially hidden), so I missed it the first go round.