Here's the solution to those who are looking for a quick guide in repairing Nokia N97 left and right ringer, hands free loud speaker problem issues like there is no audio sound can be heard over it.
This solution can be applied if the device speaker is working okay but still there is no sound output can be heard on it. The solution below shows the Ringer or Loud Speaker Audio circuit. It indicates certain components that needs to be check and or replace if found faulty or damaged.
Check and ensure first that speaker is working or already tried installing a replacement spare on.
If the speakers were okay, you may then proceed to check those components showed on the solution above.
There are filter coils connected on the circuit, you may first check this components.
For the LEFT speaker problem , you may check that the flex cable is not damaged before trying to check or replace the filter coils. If all coils or inductors were okay, you may then try to rework or re-ball the audio amplifier chip or replaced it with a new one. If the audio IC is alredy replaced and all the filter coils were seems good, You may then suspect that the problem lies or power and audio IC (AVILMAS), reworking it might help solved and fix the problem.
This solution can be applied if the device speaker is working okay but still there is no sound output can be heard on it. The solution below shows the Ringer or Loud Speaker Audio circuit. It indicates certain components that needs to be check and or replace if found faulty or damaged.
Nokia N97 Left and Right Ringer Loud Speaker Repair Solution
Check and ensure first that speaker is working or already tried installing a replacement spare on.
If the speakers were okay, you may then proceed to check those components showed on the solution above.
There are filter coils connected on the circuit, you may first check this components.
For the LEFT speaker problem , you may check that the flex cable is not damaged before trying to check or replace the filter coils. If all coils or inductors were okay, you may then try to rework or re-ball the audio amplifier chip or replaced it with a new one. If the audio IC is alredy replaced and all the filter coils were seems good, You may then suspect that the problem lies or power and audio IC (AVILMAS), reworking it might help solved and fix the problem.
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