Hi! I have a Samsung SMH4150 microwave that totally shut down one day. I have check power, ground, thee outlet if fine. So i have open the front panel and the top front grill. Check the fuse on the upper right area, it's good then i saw 2 KIE NT101 thermostats, one fix at the bottom metal frame, right side behind control panel (witch on the meter read close,signal go thru) the other one is mounted on the wall next to the main fan, this one read open. Is this OK