Haier HT-3768, Руководство по обслуживанию

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6
No
Yes
No
Yes
I19V
power supply
Inspect N701 peripheral
component of N701 and speakers
Check to see if
+19V exists
Inspect V701 V903
Power amplifier is normal.
Inspect N204and peripheral
components of N204
Make V701 collector open. Touch
No.7of V701 with black probe to
see if noise exists
Picture exists but no sound
Make C703 open. Multimeter is at band R 1K. Red probe
connect to ground. Touch No.6 of N701 with black probe
7
Yes
No
Inspect the circuit
from No.50of N204 to
No.3 of XZ603
Inspect R617
Yes
No
Check to see if V611 is
open or not well welded
Lack of red
Check to see if voltages of
XS602 are normal
Change V611 or
weld V611 again
25