Haier HT-3768 Service Manual page 25

6
Make C703 open. Multimeter is at band R 1K. Red probe
connect to ground. Touch No.6 of N701 with black probe
Power amplifier is normal.
Inspect N204and peripheral
components of N204
Yes
Inspect N701
component of N701 and speakers
7
Yes
Change V611 or
weld V611 again
Picture exists but no sound
Make V701 collector open. Touch
No.7of V701 with black probe to
Yes
Inspect V701 V903
peripheral
Lack of red
Check to see if V611 is
open or not well welded
Yes
Inspect R617
25
see if noise exists
Check to see if
+19V exists
Inspect +19V
power supply
No
Check to see if voltages of
XS602 are normal
Inspect the circuit
from No.50of N204 to
No
No
No
No.3 of XZ603