Mod making weird noises when power is on

[Punk In Drublic]

All SMPS present a noise. The ones that are audible are operating at a frequency within the human hearing capabilities <20kHz

My cat also has a audible hum – but that usually only presents itself under a bacon or fried chicken load

 

[BrotherBob]

Its constant when its powered on, when I turn it off it goes away

Welcome and glad you joined.
Hope this does not shorten the life of your mod, best of luck.

 

[levente20000]

Okay so update everyone, mod became quieter as I can hear, when battery lid is on I can't hear a thing only when I remove it and put it real close to my ear. It might have been there all the time but I don't know what caused it to become so loud. I'm still gonna stick to my new mod I ordered from fasttech hopefully its gonna be fine. Thanks for all your help love y'all <3