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Samsung galaxy S4 I9500 Mic Not Working Solution

Samsung galaxy S4 I9500 Mic Not Working Solution Schematic,Diagram,Circuit

Samsung galaxy S4 I9500 Microphone Part Not Working Solution Step By Step

Step 1

Check microphone function

in voice call receiver mode
or in Voice Recording mode

Step 2

Check the main MIC(in Sub

PBA[GH59-13075A]) is placed

for any damage
Resolder the main MIC.

Step 3

Check the offset voltage
at below test
point(40;Main_MIC_P)
> 0.4V
Resolder main MIC or replace Sub PBA.
If the voltage level is not fixed, then
you have to change U902.

Step 4

Check Sub PBA ‘Open/Short’
status between below each two
point(38)&(40)

Step 5

replace Sub PBA.

Step 6

END

Unofficial support site for this Phone By Welcome Zone Haldwani
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