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?
Weird hissing sound
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Please be positive and constructive with your questions and comments.
Please be positive and constructive with your questions and comments.