5 Troubleshooting
5-4 No Sound
Does a signal appear at
Pin 67 (Tuner sound signal), 56,
NoCheck CN703 (PC sound), CN307 (Video
57 (PC sound) of IC702 (MSP3425G) and
sound) and CN303, CN304 (DTV sound).
Pin 3, 10 (Video sound) of IC705 and
Pin 2, 9 (DTV sound) of IC706?
Yes
Does a signal appear at Pin 27, 28No
Check IC702 and related circuit.
of IC702 (MSP3425G)?
Yes
Does a signal appear
NoCheck IC704 (Audio amp) and
19at Pin 1, 2 of CN701 and
related circuit.
Pin 1, 3 of CN702?
Yes
Replace the speaker.
192MP5-7 |