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ONE POINT REPAIR GUIDE
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, IC703).
- Check IC700, IC701, IC702, IC703 pin soldering.
- If soldering ok, check the AMP heat sink:
Replace IC700, IC701, IC702, IC703.
6-1-3. Service hint (Any picture / Remark)
< AMP heat sink view >
< AMP board top view >
AMP IC (IC700, IC701, IC702, IC703)
IC602 (PWM IC)
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