Weird hissing sound

Ideas and questions about MintyBoost kits

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
GrinningArmor
 
Posts: 5
Joined: Thu Mar 22, 2007 7:56 am

Weird hissing sound

Post by GrinningArmor »

My mintyboost makes a hissing sound when charging some devices.

It starts a few seconds after plugging a device and increases in volume and pitch (sorta like a "Ghostbusters" proton pack). It's quite loud. I had a Nintendo DS plugged to the minty, inside a backpack, and the hiss was clearly noticeable.

Looks like the hiss comes from the batteries. The lid can be opened or closed; that makes no difference in the sound. Tried a few pairs of alkalines, from different brands, and they all do the same.

Also, the batteries become quite warm, but I don't know if that's related to the noise. Is that normal?

adafruit
 
Posts: 12151
Joined: Thu Apr 06, 2006 4:21 pm

Post by adafruit »

put your finger on the inductor, is it buzzing?

Locked
Please be positive and constructive with your questions and comments.

Return to “MintyBoost”