Frame collapse and from your description, it sounds like the surge blew the top off an electrolytic capacitor in the power supply to the frame output. Especially if the pop was followed by a fishy smell.
If it is just that, it would be a simple and inexpensive repair.
With storm surges it could just as easily take out several components.
Ask an engineer for an estimate, as you may be able to claim off your home contents insurance.
Cobweb, June 2005