LG 32LG30 Service Manual page 18

8. All Source Audio
Make sure you can't hear any audio.
Yes
Check Mstar I2S Output
R1048, R1050, R1051
Yes
Check IC501 Power 16V, 3.3V, 1.8V.
Yes
Check Output Signal L503, L504
Yes
Check Connector & P500
Yes
Check speaker resistance and cone
damage.
9. Digital TV Audio
Check Video output.
Yes
Follow procedure All source audio
trouble shooting guide.
10. Analog TV Audio
Check Video output.
Yes
Check SIF buffer signal.
Yes
Follow procedure All source audio
trouble shooting guide.
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
No
Check signal line. Or replace IC100.
No
Replace NTP or check output line.
No
Replace connector if found to be damaged.
No
Replace speaker.
No
Follow procedure digital TV video
trouble shooting guide.
No
Replace Mstar IC.
No
Follow procedure digital TV video
trouble shooting guide.
No
Check SIF Signal line.
No
Replace Mstar IC.
- 18 - LGE Internal Use Only