2/3/21 Oven is off. Checked fuses. All ok. Turn on and E101 Magnetron Failed is displayed. Checked filter. Was dirty. Cleaned and put filter back in. Unplugged oven and removed back and side panels. Check both mag filaments and stats. All ok. Removed mags from wave guides. Antennas are ok and no burn marks or discoloration. Checked waveguides and they are not contaminated. Put mags back on. Checked transformers. Both ok. Getting good readings. Caps and diodes are ok. Plug in and turn on in diagnostic mode. Ran each mag individually and got 8 amps/mag. Ran both mags together and getting 16 amps. Exited visual view and turned on oven to preheat. Heated to set temp of 525°. Came out of preheat. Had customer run product through. Came out ok. Getting 16 amps during microwave cycle. No errors are displayed. Cannot duplicate failure. Most likely dirty filter caused issue. Back in service.