GFI is my first look see also.
Second is open converter and shut off each and every breaker and then turn each one back on.
I've seen it too many times where the breakers LOOK all on, but actually they have not tripped all the way but enough to interrupt power. Left this way they will actually start an electrical wire fire. Don't ask me how I know that.:R
Go on line and look for your make fridge. Copy and print out the trouble shoot page.
My fridge had 4 different breakers inside it, all hidden from view. You should check them too. Good luck.