My Razer Phone charger emits noise
There are two common types of noise that a phone charger emits: hum or whine, and buzz or scratch.
A hum or whine, also known as “coil whine”, is emitted by an electronic part vibrating as power runs
through which generally cannot be get rid of. Meanwhile, a buzzing sound is caused by a defective or
failing capacitor which is a potential fire hazard.