Google the model number of the Dometic without saying Dometic
If that does not work try it with LG instead of Dometic
The Dometic POS microwave in my RV was in fact an LG. I've only had one LG produt that made me happy.. Every other one including that microwave needed to be improved or replaced.. These include
Comptuer printers (Goldstar) very cheap and dirty.. They worked but not well
Computer Monitors (Goldstar) #1 Warranty Service item at the store I worked at
Microwave (Goldstar) Dang near burned the office where I worked down .. Told 'em not to by that brand.
VCR Zenith. (now an LG brand) would not pull tape properly. Now a simple adjustment would fix it but the tool needed to do it right cost more than a Panasonic replacement that worked just fine.
Microwave: LG/Dometic.. Had to modify by enlarging a hole and replacing the OEM turntable motor with a GE that actually worked better.
DTV adapter (Used to make older analog TV's work with ATSC Digital Over the air TV) Zenith and insignia (Same board different paint job) Again made by LG. if you do not frequently change channels. it locks up and .. fails to work.
Finally I got a chest freezer. One of what I call the "Danfoss class" that actually works.. amazing.