Haier HT-2180 Service Manual page 21

4.
Break C700,let red meter rod ground and let black meter rod tap pin6 at N701,
the speakers has snapping.
Yes
If power amplifier is normal ,
check N201 sound IF circuit and
N201.
Yes
There is breakdown in sound mute
circuit, check V701, V903
Yes
Check sound power amplifier N701
circuit , speaker.
and
Maintenance Service and Trouble shooting
Picture OK, no sound
Break the connector electrode of
V701, let the black meter rod tap pin
6 at N701 , see if the speakers have
snapping.
Check if there is 19V voltage
Check 19V power circuit.
20
No
No
No