Model MHV350E....replacing lamps and shorted-out....power to receptacle but no power to unit.

Whenever the cooktop lamps blow or when they are removed or installed while the oven has power, the filaments can internally short, causing a surge which can blow the microwave's fuse and damage the circuit board.

I would suggest that you first check and replace the fuse in the oven.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

If replacing the fuse does not restore all functions, we regularly repair these controller assemblies nationwide by mail for $39.95 postpaid with a one-year guarantee.

The lights can can be inoperable or stuck on or stuck in "night light" mode. Sometimes this will similarly affect the fan operation or inside light, too.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.