Samsung Galaxy J7 J700F Ringer Ways Speaker Solution
This solution below shows the connection line paths of the Samsung Galaxy J7 J700F hands free speaker for easy troubleshooting and repair. But to fix a speaker failure, you may first check the speaker using a multimeter to easily confirm if its still working or already damaged. If the speaker is okay, clean the speaker terminal contact pads and locate the components shown on the solution below, then do a check an replacement procedure.
If the speaker is working fine and the terminal contact pads seems okay but still there is no sounds output over it. You may then proceed to check certain components on the Samsung J700F PCB board that where the speaker is being connected.
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First check the filter coils and the ESD protection diodes on each speaker polarity connections, then replace if found damaged. Trace also each corresponding connection from the speaker terminal pads down to the components where it is being connected.
Samsung Galaxy J7 J700F Ringer Solution Jumper Problem Ways Ringer Not Working