[jaguilar]

I turned the microwave on and heard a pop followed by a humming sound. Now it doesn't heat. I have power, the light comes on, the dish rotates along with a humming sound, no heat. I was thinking that maybe a fuse blew so I removed the panel but did not see any fuses. HELP!

[MicrowaveDisplaycom]

The pop usually indiactes a blown high voltage rectifier diode.

The humming could be normal, but if it's louder than usual it may mean the high voltage transformer or the magnetron has failed.

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site: Nationwide Microwave Oven Display Repair - Sharp Dacor GE G.E. General Electric etc.

You can find helpful exploded view diagrams and order parts by entering your model number here: Appliance Parts Pros.com Discount Appliance Parts – Appliance Repair Parts

[Admin / APP Team]

The loud pop does usually indicate a bad rectifier. Make sure to 1. Turn off power to the microwave first and 2. discharge the capacitor before attempting any repairs.

- Replacement rectifier

[jaguilar]

So this does not sound like an easy job, what do you think? would it just be easier to buy another?

[Admin / APP Team]

Actually, it's a fairly simple job, as long as the safety rules are followed re: disconnecting the power and discharging the capacitor. But, if you don't feel comfortable working on a microwave, please don't. Getting shocked from a high voltage capacitor could mean serious heart problems or even death.

Rectifier is number 1 on this diagram and capacitor is number 2, right behind the control panel.

Here is a page that among other things shows how to discharge a capacitor. It's a long page and has lots of info on it, so I would suggest doing a search for the phrase How To Discharge The High Voltage Capacitor (click Control and F for search while on that page).