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My microphone only picks up sound when i have it on speaker. But when it isnt on speaker no one can hear what im saying or it is to quite to hear or nothing at all it does not have stuff clogged in the mic port idk what else to check any thing helps thanks

It seems like no one knows how to fix it ,I looked everywhere for a solutions I even locked for a replacement part I didn’t find it or how to install it ,some please help