head unit fried?

[Bobby322]

I was taking out my head unit to re-do some wiring, and as I was i guess 2 wires touched and sparked with some smoke. I dont know what wires it was. I disconnected the power (yellow) wire and reconnected the extra one that was there. My HU won't do anything...alpine 9884 by the way.

[gearhound17]

First thing to check is a fuse.
Secondly I learned the hard way to ALWAYS disconnect connection at battery first.

[Bobby322]

what fuse do I check? where is it? and how do I know if its bad?