Originally Posted by
kale73
The power surge you mentioned may have fried the Air's power supply but the SSD card can be removed and installed into an external drive enclosure (available online) for archival storage or use with your new laptop.
https://eshop.macsales.com/item/OWC/MAU3ENVOY12/
The magsafe and IO board for the 2012 MacBook Air is a separate module apart from the logic board, it is probably repairable.