[kmbeamish]

I have a Whirlpool microwave, Model #MH7130XEB-1. The microwave is completely dead, no display, lights, etc. Can't hit any buttons, anything. Completely dead.

Looking for a repair manual to try to troubleshoot. Is this a common problem? Any idea of the cause?

[MicrowaveDisplaycom]

Chances are it's the fuse or a thermostat / thermal cutout on the magnetron or on top of the chassis.

There should be a handy "mini-manual" tucked behind the control panel assembly. It's helpful when troubleshooting.

It will show you where the fuse and thermostats / thermal cutouts are located.

There's a video on YouTube that shows you how to safely remove the control panel assembly on a typical microwave in less than five minutes.

YouTube - Safely Removing your Microwave Oven's Control Panel Assembly

You can get parts and helpful exploded views here: Appliance Parts Pros.com Discount Appliance Parts – Appliance Repair Parts

[meme]

take the front off. there is a fuse behing the control panel. replace it and all will be good.

[SENEMUT]

Please be sure to unplug the microwave unit before messing with any of the innards or changing the fuse.
There are capacitors inside that may hold a 4000 volt charge for a long time.