Blown Fuse? Here’s The Best Way To Fix It - Blog It doesn’t matter if there is a blown fuse or a circuit that needs to be reset. You can do it all from the box. How to Fix a Fuse or Circuit Breaker That’s Off. A fuse or circuit breaker that turned off is probably the easiest electrical problem to fix. You simply have to turn it on. Q&A Guide: Bad Circuit Breaker Symptoms | Learn to Circuit breakers have become the norm because they are less hassle and can be safer for the homeowner. However, in some instances a fuse box can be the only option if space is limited. Fuses are much smaller than circuit breakers. Fuses are also used for sensitive equipment as they are more precise and not easily affected by changes in current.