Is there a main fuse in Xperia Z?

By misstake, i connected my phones mobile charger for only 12 V, to a 24V supply in a truck. My Xperia Z died instantly. Totally dead. I have another Xperia Z with broken display that i can take spareparts from. Is there a main fuse that can be replaced ? I probably putted in about 10 - 18 Volt into the mini usb instead of 5. Or is the motherboard blown...?