I'm running a USA-Spec DF-HON adapter and there's a both an rpm-based whine and a (much more annoying) beep that happens every few seconds whenever it's being used.
This happens both whens the mp3 player is plugged in and unplugged. When listening to radio, there is no ground loop at all. I installed a ground loop isolator between the adapter and the mp3 player, and that did nothing, so it must be something between the adapter and the stereo.
What can I do? I can't really change the ground on the adapter, since it plugs into the stereo with an all-inclusive cable.
This happens both whens the mp3 player is plugged in and unplugged. When listening to radio, there is no ground loop at all. I installed a ground loop isolator between the adapter and the mp3 player, and that did nothing, so it must be something between the adapter and the stereo.
What can I do? I can't really change the ground on the adapter, since it plugs into the stereo with an all-inclusive cable.
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