The first thing I'd suggest you do is determine if the stratux is completely dead.
Did you burn up the circuitry, did the SD card just get corrupted, or did you get lucky and just burn up the fan and case?. If it's just the card, you can redownload the Stratux program onto the, or a new, card. If you prefer not to re-do the card, there are places where you can purchase a card with the program already on it.
If you just burned up the Raspberry Pi, you can get one for probably less than $50 either on line, or at a local computer store. If the frequency, AHRS, GPS, components are still good, just swap them into the new one. Of course, a new case can be had on line, or at the local computer store as well.
Wait a while, there are a few on this site that are relative experts in the Stratux. They can provide more technical input.