Hi there and thank you for choosing this service.
H97, means that there's a problem with your inverter, magnetron, most of the time it is usually your magnetron that has failed. about how old is this model ?
is this expensve to fix. the microwave is 2 years old
Depending on what could be wrong, but if it is something major like the "control board" or even perhaps the "magnetron" then yes, you are better off saving your money as it will cost you more than what it is worth.
let me know if you have any other question, if you do not then please leave a positive rating. thanks again.