[ak217]

What was the model? I recently encountered something similar with a GE over-the-counter microwave. One day it stayed on after opening the door. I replaced the control module and the board in it looks exactly like the one in the OP photo (Midea with all of the same components), which leads me to think the fault is the same as the one described in the post.

[arghandugh]

Yep, the GE over-the-range model PNM9196SF3SS. GE is just a Haier badge since 2016. I'm not surprised by a Chinese company not giving a shit, but for a microwave magnetron to fire on its own feels like a sign of deep engineering rot.

The only fix was to unplug it then swap the logic board. Once it happened again with the new board we threw it out.

[xattt]

I had non-stop issues with GE OTR microwaves for 2 years. I started with a PVM2188SLJC that I ended up getting replaced three times by GE over a year for separate issues (buzzing turntable, cracked casing). I ended spamming the executive team and got an upgraded model with convect for free.

Fast forward two years later, and the fuse tripped inside the microwave after I forget a bottle sterilizer overnight, on Christmas Day.

I said fuck this, and went and got a Panasonic NN-SG158. The twist was that it looked like it was a different version of the first GE microwave we had from the same OEM, but a little reworked.

[ak217]

Mine was a PEM31DF2WW. The control panel layout looks slightly different but the segment display looks identical to yours.

The board that I replaced is a Midea MD1001LSE EMLAA5G-S3-K VER17. Not an exact match to the OP but in the same family.

[netdevnet]

> One day it stayed on after opening the door.

So you basically got exposed to microwave radiation. That's dangerous. Have you checked in with a doctor?

[rustcleaner]

It's a microwave, non-ionizing. They're pretty much easy-bake ovens which shine a monochromatic light at a color water is very black/absorptive at (a color far redder than infrared). They cook outside-in so he'd be baking his skin well before internal injury.

[HPsquared]

It would be like thermal burns but deeper. The heating is more diffuse and deeper than traditional cooking methods so I'd imagine if you did get a burn, it would go deeper into the tissue than you might expect.

[frabert]

https://www.youtube.com/watch?v=3hBRxwQXmCQ This guy recklessly tested various way of getting irradiated by a microwave to see what the effects are.

[chongli]

An extremely irresponsible video. He talked a lot about scary apocrypha to do with eyeballs exploding but never once mentioned the possibility of vision damage or blindness without the drama. I think he knew that microwaves are extremely dangerous to your eyes and avoided doing the most potentially damaging things without talking about it. To whit:

If you bypass the door interlocks and operate the magnetron with the door open and then stick your head into the cavity, you risk have your eyes pass through one of the microwave peaks in the standing wave pattern set up by the cavity. Extremely intense, localized heating within your eyeballs is never a good idea, and you risk burning your retinas or damaging your corneas or lenses.

The eyeball is large made of water and protrudes somewhat from the eye socket. Peering forward into the interior of the microcave cavity has the potential to expose your eye to the full brunt of the standing wave peak without much other body mass in the way to absorb the energy, creating the potential for that intense localized heating.