Samsung Galaxy Note 3 SM-N900 Sub ,Second Mic not working Solution  Schematic, Diagram , Circuit 



Samsung Galaxy Note 3 SM-N900 Sub ,Second Mic not working Solution Step by Step 


Step 1

Check Sub(2nd) microphone function
in voice call loudSPK NS Off mode
or in camcording mode

Step 2


Check PCB where Sub MIC
(MIC701) is placed
for any damage

Replace the PCB module

Step 3

Check the voltage at
C753 = 2.8V

resolder or replace U703

Step 4

Check component soldering
statuses of L701, L702

Resolder or replace L701, L702

Step 5

END







Unofficial Support Site By welcome Zone Haldwani 


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