I’ve got 2 Mother 32’s that are only about six months old and last week one of them stopped powering on and now today the other one wont power on either. They are kept in my studio and have had zero abuse of any kind. Am I missing something here? 
How are you powering them?
Just with the power cords that came with them.
I don’t know where the fuses are on the Mother. I suggest you contact Moog support.
I had this issue as well after 6 months of usel. The fuse was OK. The local dealer swapped the entire electronics board under warranty.