Nokia E72 Earpiece Speaker Problem Solution

Here's a  Nokia E72 solution for not working earpiece speaker problem or no audio sound can be heard on the receiver speaker.

First, you may need to check the earpiece speaker and try to install a replacement spare on it. Also ensure that the speaker terminal contact pads on the PCB board are cleaned.
You may then refer to the solution below for it shows the connection line paths of the earpiece speaker on Nokia E72 for further troubleshooting.

Nokia E72 Earpiece Speaker Problem Jumper Solution

There are two filter coils and an ESD filter chip mounted near the vibra motor, you may check these components and then replace if found damaged. You may also trace the connection line paths from the speaker terminal contact pads trough to these components.
If the above procedure does not fix the problem, you may then consider that the problem lies on GAZOO chip, reworking it might only fix the Nokia E72 receiver speaker problem.
source http://gsmangel-nokiahardware.blogspot.com/2011/01/nokia-e72-earpiece-speaker-problem.html