Haier LT32C360 Service Manual page 48

4) No sound
Check if the power supply
system is damaged, short
circuit or mis-connected
Check the volume control
circuit from R302
U19
Check the volume input
circuit from U8 to
U19
Check the
input
N
source
Reset
Y
volume
Check the
Y
speakers
N
Y
N
- 47 -
No sound
N
Check if there is sound input
signal
Y
Check if the volume control is
at 0 level or muted
N
Check if there is output at
CJ26
N
Check if there is +12V input at
PIN7of U19
Y
Check if MUTE PIN of U19 is low
voltage
N
Check if there is signal input at PIN1
& PIN9 of U19
Y
Replace U19
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