Audio Output Is Small Or No Audio Output - LG OM7550 Service Manual

5. AUDIO OUTPUT IS SMALL OR NO AUDIO OUTPUT

Audio signal output is small or not. when you power on the Middle Power Mini System.
5-1. AMP IC (IC700, IC701, IC705)
5-1-1. Solution
Replace IC700, IC701, IC705 on MAIN board.
5-1-2. How to troubleshoot (Countermeasure)
1) Please check if this system is on bass blast mode.
  C, RL and RR make sound only on bass blast mode.
2) Check the IC700, IC701, IC705 on your eyes.
3) Check the audio signal output check (pin13 of IC700, IC701, IC705).
First, Check the PWM Data input (pin3 of IC700, IC701, IC705)
4) If the audio signal output has no output, try to change IC which has no output.
5) Lastly, check Speaker Terminal (CN701, CN702).
5-1-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
IC700, IC701, IC705 IC700, IC701, IC705
< MAIN board top view >
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