I Cannot Hear Sound Through The Headphones; The External Microphone Does Not Work Normally - Samsung R410 Service Manual

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4. Troubleshooting
→ Check if there is a magnetic object near the speaker.

9. I cannot hear sound through the headphones.

→ Check if the sound is muted in Windows.
→ Turn the volume up.
→ Replace the main board

10. The external microphone does not work normally.

→ Check the audio driver settings and change them if necessary.
Selecting the "1. Front panel microphone" option activates the external MIC.
→ Replace the main board
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