Haier HT-3768, Руководство по обслуживанию

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3
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
Yes
Check to see if voltage of No.3 at
N402 is normal
Check to see if R907 and
R448 are not well welded or
R448 become abnormal
No
Yes
No
Yes
Normal
Change component
and repair circuit
Inspect N204
and peripheral
components of
N204
I24V
power supply Check to see if the deflection
yorks are connected, C433 is
open or weldless. Inspect
peripheral component of N402
and N402 itself
4
None
No
Yes
Inspect the
circuit from
CPU to tuner
Antenna
or tuner is
abnormal
No Yes
Inspect V101
Z101 N204and
PIF part
Enter D-MODE or enter
S-MODE with customer
remote controller. Make
RAGC tuned to 2Dor so.
Noise on picture just
disappears.
Have noise
Check to see if voltage
output available at tuner
Check to see if RAGC is
at 00 mode
Exist
Not exist
No sound and picture
Snowy noise exist
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