The only fix was to unplug it then swap the logic board. Once it happened again with the new board we threw it out.
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.
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.
So you basically got exposed to microwave radiation. That's dangerous. Have you checked in with a doctor?
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.