Acer Aspire 3750 - Microphone Failure

4-10 Troubleshooting
Microphone Failure 0
If internal or external Microphones fail, perform the following, one at a time.
Figure 4-7. Microphone Failure
1.
Check that the microphone is enabled. Navigate to Start  Control Panel  Hardware and Sound 
Sound and select the Recording tab.
2. Right click on the Recording tab and select Show Disabled Devices (clear by
default). The microphone appears on the Recording tab.
3. Right click on the microphone and select Enable.
4. Select the microphone then click Properties. Select the Levels tab.
5. Increase the volume to the maximum setting and click OK.
6. Test the microphone hardware:
Select the microphone and click Configure.
Select Set up microphone.
Select the microphone type from the list and click Next.
Follow the on-screen prompts to complete the test.
7. If the Issue is still not resolved, refer to
Online Support Information .
Start
No
Check MB MIC. Cable
Re-assemble M ic
cable to MB
No
Check MIC wire of
LCD module
Swap MIC wire of
LCD module
Replace M/B