yup test it with a new psu and see if it works. we have no way of guessing either what may or may not have been damaged.
can recommend when you get the new one to not cheap out. a quality psu will not only last longer, but will have a lot of protection built in to prevent damage to parts if something does go wrong. had a pc recently i put a good psu in that shorted on the hdd and fried the wires all the way back to the psu in the surge!!! other than the hdd itself, the rest of the pc was fine since the protections kicked in and killed the power fast.
do yourself a huge favor and buy something quality. we can help with the choice if you need some guidance there.