new battery, defrost light blinks, a/c off after one minute blink stops a/c on

I don’t know how to check for blown fuses. Just want this behind me and fixed now Thanks

As stated, consult a local repair facility / dealership for guidance. This forum will not be able to perform diagnostic testing for you, and your concern does not indicate a "common known concern". So, you'll have to get hands on assistance near you. I'm sorry.