Here's a solution for a not working earpiece speaker on Nokia 6730c. This solution shows some hints on how to fix a not working receiver speaker or no audio signal can be heard on the device when making a call.
IF trying to repair this problem, you may first check the earpiece or receiver speaker assembly for possible damaged using a multimeter. Then also check and ensure that the speaker's terminal contact pads is clean and free from any oxidation build up. After doing those steps above and seems that the speaker is still working but still there is no voice sound from the caller over it... you may refer to this solution below for further check-up and repair procedures.
Just locate the components showed on the solution above on 6730c PCB board and then start by tracing its connection line paths, then check the filter coil and the ESD protection chip, replace it if found damaged.
Note: the earpiece audio signal is feed from the GAZOO chip, there is a possibility that you may need to rework or replace this chip to fix earpiece problem on Nokia 6730c.
IF trying to repair this problem, you may first check the earpiece or receiver speaker assembly for possible damaged using a multimeter. Then also check and ensure that the speaker's terminal contact pads is clean and free from any oxidation build up. After doing those steps above and seems that the speaker is still working but still there is no voice sound from the caller over it... you may refer to this solution below for further check-up and repair procedures.
Nokia 6730c Earpiece Speaker Problem Solution
Connection Jumper Ways and Tracks
Just locate the components showed on the solution above on 6730c PCB board and then start by tracing its connection line paths, then check the filter coil and the ESD protection chip, replace it if found damaged.
Note: the earpiece audio signal is feed from the GAZOO chip, there is a possibility that you may need to rework or replace this chip to fix earpiece problem on Nokia 6730c.
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