LG / GOLDSTAR DVS7905
Instrukcja Serwisowa

(B) No Sound

No Sound. YES Check the Vcc of IC751 Pins1, 11, 19, 22, 33. YES Check the Tuner SiF signal at IC751 Pin2. YES Check the oscillator of IC751 Pins5, 6. YES Check the Audio of IC751 Pins30, 31. YES Check the Audio of IC801 Pins2, 3. YES Check the Audio of IC801 Pins16, 17. YES Check the Audio of IC802 Pins22, 26. YES Check the Signal flow from IC802 Pins22, 26, SC901 Pins1, 3. NO Check the signal flow from IC801 Pins16, 17 to IC802 Pins10, 16. NO Check the IIC Clock and Data at IC801 Pins42, 43. NO Check the signal flow from IC751 Pins30, 31 to IC801 Pins2, 3. NO Check the IIC Clock and Data at IC751 Pins12, 13. NO Replace X751 NO Check the Tuner SIF of TU701 Pin22. NO Check 5.0V Line.

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