4.
Picture OK, no sound
Break C700,let red meter rod ground and let black meter rod tap
pin6 at N701, the speakers has snapping.
If power amplifier is normal ,
check N201 sound IF circuit
and N201.
Break the connector electrode of
V701, let the black meter rod
tap pin 6 at N701 , see if the
speakers have snapping.
There is breakdown in sound
mute circuit, check V701,
V903
Check if there is
16.5
V voltage
Check sound power amplifier
N701 and circuit , speaker.
Check
16.5
V power circuit.
4.
Yes
No
Yes
No
Yes
No