Haier HT-2180, Руководство по обслуживанию

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20
There is breakdown in sound mute
circuit, check V701, V903
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.
Check if there is 19V voltage
Check sound power amplifier N701
and
circuit , speaker.
Check 19V power circuit.
4.
Yes No
Yes
No
Yes
No
Maintenance Service and Trouble shooting