This solution covers on how to fix a not working earpiece or receiver speaker of Nokia 6700 slide.
The earpiece speaker is being connected to the flex ribbon cable of the device, you may first check and try to replace the speaker then the flex cable for possible damaged.
If already ensured that the speaker and the flex were both okay, you may then trace the corresponding connection line paths of the earpiece speaker from the flex pin connector down to the two capacitors near the GAZOO IC. There is a possibility that the GAZOO chip also caused the problem since it holds and feeds the audio data signal to the speaker. Reheating or reworking it might possibly fix the problem.
