The other night when I was using my winch my husband hooked up the battery cables backward in return blowing my amp's fuse. We replaced the fuse but now my amp doesn't put out any sound. We have checked for power at the amp power wire and the remote wire from the stereo and have power at both. The power led comes on like it should but no sound out of the sub. Any ideas or suggestions to try would be great. Thanks in advance.