This video explains some things that may go wrong with your electrical panel and how to replace the circuit breaker if needed.
He explains that if you have blinking or flickering lights and the lamp and bulb are both fine you should have an electrical contractor take a look at your electrical panel. It may be over heated on the back side of the breaker.
There isn’t any electrical wire connected to the box but he still explains how to replace a breaker very well. Watch this video to avoid potential fires in the future!