A few days ago my car went into the shop for some maintenance and when i got it back the fuse in my amp was blown. picked up a few more and changed it out and it blew again when i connected power to the battery. i unhooked my sub and tried again, and it blew. i checked all the connections behind the deck and they were fine, as were my power and grounds. any ideas what my problem might be or how i can troubleshoot to find the problem?

Amp:
MTX RFL202
400 Watts
2 Channel

 

Disconnect everything from the amp. Attach power and ground only and put in a fuse. If it blows, your amp is pooched.

Always pull the main amp fuse before letting anyone work on your car.