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5 Troubleshooting
5-4 No Sound
Does a signal appear at Pin 67 (Tuner sound signal), 56, 57 (PC sound) of IC702 (MSP3425G) and Pin 3, 10 (Video sound) of IC705 and Pin 2, 9 (DTV sound) of IC706? Yes
No
Check CN703 (PC sound), CN307 (Video sound) and CN303, CN304 (DTV sound).
Does a signal appear at Pin 27, 28 of IC702 (MSP3425G)?
No
Check IC702 and related circuit.
Yes Does a signal appear at Pin 1, 2 of CN701 and Pin 1, 3 of CN702? Yes No
19
Check IC704 (Audio amp) and related circuit.
Replace the speaker.
192MP
5-7
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