Haier HT-3768 Service Manual page 24

3
Yes
Check to see if R907 and
R448 are not well welded or
R448 become abnormal
Yes
Change component
and repair circuit
Normal
4
Not exist
Check to see if RAGC is
Yes
Enter D-MODE or enter
S-MODE with customer
remote controller. Make
RAGC tuned to 2Dor so.
Noise on picture just
disappears.
Have noise
Horizontal bright line
Make R328 open. Multimeter is at range R 1K. Red
probe connects to ground. Touch No.5 of N402 with
black probe. Bright line flashes for a moment
No
Inspect N204
and peripheral
components of
N204
at 00 mode
Inspect V101
Z101 N204and
PIF part
Check to see if voltage of No.3 at
Yes
Check to see if the deflection
yorks are connected, C433 is
open or weldless. Inspect
peripheral component of N402
and N402 itself
No sound and picture
Snowy noise exist
No
Yes
24
No
N402 is normal
Inspect +24V
power supply
Exist
Check to see if voltage
output available at tuner
Inspect the
Antenna
circuit from
or tuner is
CPU to tuner
abnormal
None
No
No