Read LG 32LD310H / 32LD320H (CHASSIS:LA06A) Service Manual online
Analog RF Audio Trouble shooting guide
Check TU5001 Pin9(SIF)
Can you see the normal signal?
Can you see the normal signal?
Check the input of Mstar (IC101).
Measure waveform at C250 because it’s more easy to check.
Can you see the normal waveform?
Measure waveform at C250 because it’s more easy to check.
Can you see the normal waveform?
YES
NO
Could you measure voltage of TU5001& IIC lines?
Are they all normal?
Are they all normal?
NO
You should check power line
& IIC lines.
& IIC lines.
YES
You should replace TUNER.
NO
After checking audio signal line, you should decide to replace item or not.
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