Microwave, adora, stopped heating
Hi and welcome to FixYa,
Almost always, on most microwave including GE Adora, no heat with all else working indicates a problem with the magnetron. Since the magnetron produces high RF energy and operates on high voltage, it would be to your advantage to seek the services of a qualified professional.
If on the other hand, the fault of no heat is coupled with no display, error messages, door not locking, no light, then it would be possible for a DIY (do-it-yourself) repair. All that is required is a bit of familiarity with electronic components and circuitry, the use of a DVM/VOM of course safe working practices when repairing electrically powered devices.
Pls post back any other symptoms or indicators other than 'no heat'.
Good luck and thank you for using FixYa.