The answer to 'surge protector buzzing noise' is that a buzzing or humming sound coming from a surge protector is typically caused by a faulty or damaged electrical component inside the device. This can be due to age, power surges, or other electrical issues.
Some common symptoms include a persistent buzzing or humming noise, the surge protector feeling hot to the touch, or the device not functioning properly. If you notice any of these issues, it's best to replace the surge protector rather than try to repair it yourself. Attempting to open or tamper with a surge protector can be dangerous and should only be done by a qualified electrical professional.