marxy's musing on technology: QJ-PS30SWI low noise switching power supply with "noise offset" feature
How to troubleshoot a power adapter or transformer that is making a loud humming or buzzing sound. | Sony USA
![What are some of the causes of computer's to breakdown over time...say 5-6 years? - Computer Science - Science Forums What are some of the causes of computer's to breakdown over time...say 5-6 years? - Computer Science - Science Forums](https://i.ytimg.com/vi/51cc0rHFwOc/maxresdefault.jpg)
What are some of the causes of computer's to breakdown over time...say 5-6 years? - Computer Science - Science Forums
![My friend just accidentally knocked this switch on his power supply down to 115 volts while it was running. There was a large spark and a loud pop, followed by the system My friend just accidentally knocked this switch on his power supply down to 115 volts while it was running. There was a large spark and a loud pop, followed by the system](https://preview.redd.it/z9nde1qvgy241.jpg?width=640&crop=smart&auto=webp&s=c0d00ca383f90e53375ca56eae10198fc3463f7a)