If the magnetron, which is the component responsible for generating the microwave radiation, is completely removed from a microwave oven, the oven should not pose a significant radiation hazard. The magnetron is the key source of microwave radiation in a microwave oven, and without it, the oven cannot generate microwaves.
However, it is important to note that microwave ovens can store residual electrical energy even when they are unplugged. This energy is stored in components such as capacitors and can present an electrical shock hazard if mishandled. Therefore, it is recommended to exercise caution and avoid tampering with the internal components of a microwave oven unless you have the necessary expertise and knowledge of electrical safety procedures.
If you need to dispose of a microwave oven or have concerns about its safety, it is best to contact a qualified professional or the manufacturer for guidance on proper disposal or repairs.