![background image](http://html.mh-extra.com/html/haier/l32b1120/l32b1120_service-manual_136905047.webp)
- 46-
4)
No sound
No sound
Y
N
Check if there is sound input
signal
Reset
volume
Y
Y
Check the
input
source
N
Check if the volume control is
at 0 level or muted
Check the
speakers
Y
N
Check if there is output at
J11
Check if there is +12V input at
PIN28 of U19
Check if the power supply
system is damaged, short
circuit or mis-connected
N
Y
Check if PIN7 of U19 is low
voltage
Check the volume control
circuit from U19
Y
N
Check if there is signal input at PIN3
& PIN12 of U19
Check the volume input
circuit from to
U19
N
Y
Replace U19
Содержание L32B1120
Страница 3: ... 02 9 Trouble shooting 43 9 1 Simple Check 43 9 2 Main Board Failure Check 9 3 Panel Failure 44 53 ...
Страница 13: ...3 4 LCD Panel 12 02 9 ...
Страница 18: ... 17 ...
Страница 19: ... 18 ...
Страница 20: ... 19 ...
Страница 24: ...6 Operation Instructions Basal information 6 1 Front panel controls 6 2 Back panel controls 23 ...
Страница 25: ...6 3 Setting Up Your Remote Control 24 ...
Страница 26: ...7 Electrical parts 7 1 Block diagram 25 AMP Headphone Coaxial 1 2 MSD318QT Main IC ...
Страница 37: ...8 TV OPERATION 36 ...
Страница 38: ... 37 ...
Страница 39: ... 38 Press ENTER Key To Select ...
Страница 40: ... 39 Press ENTER Key To Select ...
Страница 41: ... 40 ...
Страница 44: ... 43 9 Trouble shooting 9 1 Simple check ...
Страница 46: ... 45 3 Panel display abnormally connector J9 is at normal level ...
Страница 50: ... 49 7 PC no picture or picture abnormal ...
Страница 51: ... 50 8 YPBPR AV no picture or picture abnormal Check Y ...