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2. The shielding wire of the earphone cable falls off, or there is no shielding wire at all. The shielding wire should completely wrap the signal wire with a braided belt, rather than replace it with an ordinary single-core ground wire; Solution: 1, change the sensitivity is lower, the impedance is higher headphones; 2. Replace the signal cable of the headset with a mesh woven signal cable with a shielded wire;
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3, find a friend who knows electronics and welding between the signal line and the ground line of the left and right channel and put a chip capacitor 683 or 104
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Give it a thumbs up if you think it'll help