Circuit breaker issue....

[machinist]

It sounds like you’ve had some frustrating issues with blinking electronics and appliances. Since you’ve already swapped out the breaker, there are a few more things to check. Make sure all wiring connections are tight and secure, as loose connections can cause flickering. Even new breakers can occasionally malfunction, so ensure the new one is properly installed. It’s also worth checking if the circuit is overloaded, even if it seems like it shouldn’t be. Sometimes, power issues from the utility company can cause problems too. If the blinking continues, it might be best to call a licensed electrician to take a closer look and find out what’s going on.

[mrcaptainbob]

The electronics in the living room started blinking, along with three of her aquariums and a floor lamp. Nothing else in the house went on the blink. It lasted a short period and then did it again five or so times. Happened about two weeks ago the same way. Swapped out that circuit breaker. It's a 20A Square D. The electronics is a tv, surround sound, dvd unit and the aquariums each have an air pump and a led lamp above. Hardly near 10 amps, much less 20. I have heard of circuit breakers going bad. was told a very long time ago to occasionally 'exercise' them by switching on/off. Don't know about that, but I did swap that breaker with a new one. Time will tell. Never had this happen before. Anybody ever have this happen?