Here's a solution for Nokia 6720c earpiece speaker problem, This solution may possibly help fix the receiver speaker don't have voice sound can be heard on the device.
If these problem happened to the phone, you may need to check the speaker assembly and replace it, if already busted or damaged. Ensure also that the terminal contact pads on the PCB board is leaned and have a good connection to the receiver speaker.
If the speaker seems working well and the contact pads is cleaned but still there no audio sound can be heard on it when making a call, refer to the solution below and locate those particular components then check for possible damaged.
You may then trace each of the corresponding terminal connection down to the filter coil, then check also if the filter coil still working. If both were okay, you may then try to rework the Audio Controller chip or replace if necessary.
If these problem happened to the phone, you may need to check the speaker assembly and replace it, if already busted or damaged. Ensure also that the terminal contact pads on the PCB board is leaned and have a good connection to the receiver speaker.
If the speaker seems working well and the contact pads is cleaned but still there no audio sound can be heard on it when making a call, refer to the solution below and locate those particular components then check for possible damaged.
Nokia 6720c Earpiece Speaker Solution
with connection line tracks
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