I can hear hissing sound from my router. The heavier the router load, the louder the sound. I think the noise is from the coil in 5V to 3.3V DCDC converter. Can someone tell me the capacity of the inductor and which one is it? I have tools and can replace it myself.
AR150 hissing sound
This is the first time we have received such feedback. Could you please return the device to us for analysis?
Check the wall-plug adapter - some USB PSU’s might be less than optimal, and introduce noise on to the DC bus into the AR150. The “hissing” you hear is coil-whine
It’s harmless enough - but with more than 40 ar150’s fielded, I honestly have not seen anything resembling noises like you’ve mentioned.