Read LG 55LS675H (CHASSIS:LA2AG) Service Manual online
- 19 -
11. Audio out Trouble shooting guide
Check the output of Mstar(IC101).
Measure waveform at R148, R503, R504.
because it’s more easy to check.
Can you see the normal signal?
YES
NO
This board has big problem
because Main chip (MStar) have some troubles.
After checking thoroughly all path once again,
You should decide to replace Mstar or not.
Check Audio AMP output L503,L504,L505,L506
Can you see the normal waveform?
NO
YES
After checking the Power & I2C & Reset of this chip,
you should decide to replace this or not.
Check the speaker output wafer P501.
Can you see the normal waveform?
NO
YES
After checking audio signal line,
you should decide to replace item or not.
Check the connector & Speaker
Click on the first or last page to see other 55LS675H (CHASSIS:LA2AG) service manuals if exist.