Samsung LW22A13W Specifiche Scaricare il pdf (Pagina 32)

5 Troubleshooting

LW22A13W 5-17

CONFIDENTIAL

5-9 No Sound

Does the signal appear at

Pin 67 (Tuner sound signal) and Pin

47, 48 (PC sound) and Pin 53, 54

(SCART1 sound) and Pin 56, 57

(SCART2 sound) and Pin 50, 51

(VCR) of IC919 (MSP3451G)?

Chagne a FPC cable. (CN101)

Change a input board assy. (BN59-00339A)

Picture is display.

Yes

Connect the sound cable.

(RF, Video, Scart, PC etc)

Connect a speaker wire.

Check the DC +8V,

+12V_3 of IC919, IC501?

Power rugulator IC (ICP23) are bad.

Change main board assy. (BN94-00400A)

Yes

Does the signal

appear at L501~L504?

Sound IC (IC919 or IC501) are bad.

Change main board assy. (BN94-00400A)

Yes

Replace the speaker assy

BN96-00176A (R),

BN96-00177A (L)?

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Samsung LW22A13W Specifiche Pagina 32