Hi @Linda Foster,

The fuse is part #34 in the parts diagram for your microwave.

They don’t blow without a reason, so maybe buy 2-3 if you replace it and it blows again straight away.

It maybe the door interlock switches not operating in the correct sequence i.e. they’re loose maybe or perhaps something more, e.g. a faulty HV transformer etc. You will have to start testing to find out