Charger Plug Makes Noise

I noticed it just there none of the other plugs made any noise so i unplugged the laptop charger and it continued to make that no5use for a minute or more why would it do that after being unplugged.

Charger plug makes noise. When i plug the phone in it stops but then when the phone is fully charged it makes the noise again except 10 times worse and it steadily increases with time. Laptop chargers are different in that they consist of several parts. If the charger is plugged in but the phone isn t plugged into the charger it will make this annoying sound. I have to literally put my ears on the charger brick to hear it and this is an extremely silent environment.

In conclusion a whining noise is not necessarily a sign of trouble in cheaper wall chargers when they are unloaded. Some laptop chargers produce a crackling noise right where the two charger parts meet at the ac power adapter. However a computer psu or laptop charger that generates coil noise especially when under a load may be defective and you may want to consider replacing it. If it s charging at a high rate 0 80 it makes an almost inaudible electric type high pitch noise.

Initially you can hear a relatively low but still audible and annoying crackling noise. More information on coil noise can be found in this wikipedia article. Laptop charger plug making a clicking noise for a minute after i unplugged it.