[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.