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5. Picture display but no sound
Cut of C601, connect red pen of multi-meter(R*1K) with ground,
and black pen tap Pin1 of N602 if there is snapping
Picture exists but no sound
Power amplifier is normal.
Check N101 and external SIF
circuit
Check muting circuit
and V601\V602
Check to see if +19V
exists
Check SIF circuit and speaker
I19V
power supply
Cut off collection electrode of V602, use
black pen of multimeter tap Pin1 of
N601 if there is snapping sound
Yes
No