No Audio From Speaker - LG BH9530TW Service Manual

6. NO AUDIO FROM SPEAKER

When unit is connected to speaker, no audio from speaker.
6-1. IC602 (PWM IC)
6-1-1. Solution
Replace IC602 (PWM IC).
6-1-2. How to troubleshoot (Countermeasure)
1) Check IC602 pin soldering.
2) If there is short soldering on pin IC602, re-soldering pin IC602.
3) If problem still occurs, check AMP IC (IC700, IC701, IC702).
- Check IC700, IC701, IC702 pin soldering.
- If soldering ok, check the AMP heat sink:
Replace IC700, IC701, IC702.
6-1-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
AMP IC
IC602
PWM IC
< AMP board top view >
< AMP heat sink view >
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