This is the Nokia 1680 and 1681 classic solution for not working Earpiece Speaker problem. This solution provides the connection line paths of the receiver speaker that is may useful for an easy repair procedure.
Here's a simple instruction on how to diagnose and fix the receiver speaker problem: First check the receiver speaker for possible damaged, replace if its already busted. Clean the speaker terminal contact pads, an oxidation or corrosion build up may also cause the problem. Then refer to the solution below if the above basic procedure doesn't fix the problem.
Nokia 1680c and 1681c Earpiece Speaker Connection Line Paths
Check and replace the filter coils and capacitors, trace also its connection down to the terminal contact pads.If those components were okay and the lone paths is good. Try to reheat the UEMCLIT chip, rework or then replace if necessary.
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