By
eHow Home & Garden Editor
Difficulty: Moderately Easy
Step1
Clean and dry your hands before you begin working on the circuit breaker box.
Step2
Turn off all circuit breakers to the house to begin work.
Step3
Reset the circuit breaker and watch what happens. If one or more breakers trip immediately, then you may have a short in a switch. Replace the switch by getting one with the exact same amperage from your local hardware store.
Step4
Turn on each of the circuit breakers one at a time, and watch what happens. If you notice that one particular breaker trips every time you flip on another breaker, you might have a short circuit in some fixture that's controlled by that particular circuit breaker switch.
Step5
Watch what happens with each switch while you turn them all on. If nothing happens while you turn each one on, then the problem actually lies with the appliance in question and not the circuit breaker.
Step6
Unscrew a broken circuit breaker to replace it, and put a new one in its place. Turn on all the circuit breakers once again to test it.