To fix MIC problem on Nokia 1680 and 1681 classic, you may first check the microphone module using a multimeter – to confirm if it’s still working or not. You may also clean the MIC’s terminal contact pads if there’s an oxidation build up found.
If the microphone seems okay and the contact pads is cleaned but the problem still exists, refer to the solution below and check the connected components to it and trace also its connection line paths.
Nokia 3120c MIC Connection Line Paths
First step is open mobile and check Nokia 3120c Mic points on borad if there is a good value in it then change Mic with new one.Problem will be solve. if only mic points do not show value then chek all mic track and parts that are used in mic function in Nokia 3120c.all mic parts and track are given in above diagram check all these parts and components and if necesory resold or change them.this will help you in Nokia 3120c Mic Solution Jumper Problem Ways Microphone
Nokia 3120cMic Solution Jumper Problem Ways Mic Not Working Microphone
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