How to troubleshoot a power adapter or transformer that is making a loud humming or buzzing sound. | Sony USA
![My LED aquarium light seems to be making a buzzing noise after I moved and changed power sources. It's coming from the plug, not the light itself. Is this dangerous? I don't My LED aquarium light seems to be making a buzzing noise after I moved and changed power sources. It's coming from the plug, not the light itself. Is this dangerous? I don't](https://i.redd.it/8v9kpicqwl981.jpg)
My LED aquarium light seems to be making a buzzing noise after I moved and changed power sources. It's coming from the plug, not the light itself. Is this dangerous? I don't
![laptop - Power supply makes high frequency noise, is it damaging my battery? (or other parts of the computer) - Super User laptop - Power supply makes high frequency noise, is it damaging my battery? (or other parts of the computer) - Super User](https://i.stack.imgur.com/moQwP.jpg)