LG GS290 mic trouble can't make calls or record voice messages

Fault description:

Due to some hardware reason LG GS290 mobile got mic trouble. This is a minor fault in LG mobile but due to this we can’t complete any call and also can’t record any voice message.   

Fault solution:

For this mic solution we have to change mic from five point mic to ordinary two leg universal mic using 1k resistor and two jumpers.

1.       First remove that default mic

2.       Then pick universal mic and connect first point to default mic’s first point as shown with black line in image below.

3.       Then connect second point of universal mic to fifth and last point of default mic with red line as shown in above image.

4.       Finally connect a 1k transistor as shown with red color between 3rd and 5^th point of default mic.

Conclusion:

During these mic altering process we should use good quality universal mic because local mic may result in low voice or distribution in voice during call .

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LGkp500 mic trouble no voice

Fault description:

In lg mobile sometime mic starts not responding during call so at callers end no voice generates. Due to this we can’t record voice in voice recorder and can’t make any call properly.

Fault solution:

For this mic solution we have to follow all these procedure step by step:

1.       First we should change new mic and then check for voice sound.

2.       Then clean both mic connectors positive and negative for proper voltage.

3.       If proper voltage appearing on point then use following jumpering solution as shown in image:

4.       During mic jumpering process we have to connect a 1k transistor between both positive and negative point

5.       After that connect mic with those point and that 1k transistor 

Now we will get our mic properly in working condition.

 Conclusion:

As previously described we have to use only 1k resistor exactly because using different current resistor can cause other problem like shorting in mic line track.

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