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5 Troubleshooting
5-9 No Sound
Picture is display.
Yes
Does the signal appear at
Pin 67 (Tuner sound signal) and Pin
47, 48 (PC sound) and Pin 53, 54
48
(SCART1 sound) and Pin 56, 57
(SCART2 sound) and Pin 50, 51
(VCR) of IC919 (MSP3451G)?
Yes
Check the DC +8V,
49
+12V_3 of IC919, IC501?
Yes
Does the signal
50
appear at L501~L504?
Yes
Replace the speaker assy
BN96-00176A (R),
BN96-00177A (L)?
LW22A13W
All manuals and user guides at all-guides.com
Connect the sound cable.
No
(RF, Video, Scart, PC etc)
Connect a speaker wire.
No
Chagne a FPC cable. (CN101)
Change a input board assy. (BN59-00339A)
No
Power rugulator IC (ICP23) are bad.
Change main board assy. (BN94-00400A)
No
Sound IC (IC919 or IC501) are bad.
Change main board assy. (BN94-00400A)
CONFIDENTIAL
5-17
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