![2012 Focus mk3 1.6EB radio problem. When I listen to music via aux, bt or usb (not radio) I always have a high-pitched noise. The noise comes from every speaker and is 2012 Focus mk3 1.6EB radio problem. When I listen to music via aux, bt or usb (not radio) I always have a high-pitched noise. The noise comes from every speaker and is](https://preview.redd.it/lqewsw5w1pr11.jpg?auto=webp&s=ae95e627b6488a66a062a596d903dd94830542c3)
2012 Focus mk3 1.6EB radio problem. When I listen to music via aux, bt or usb (not radio) I always have a high-pitched noise. The noise comes from every speaker and is
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