A blown or bad fuse is a common problem that will cause your AEG to stop firing. Replacement fuses are cheap and knowing how to change the fuse is important for all AEG owners. This video explains how to change the fuse on the CM028 AK47 AEG. Many AEGs use the same kind of fuse, and the fuse is almost always located on the wire where you connect the battery to the airsoft gun.