Haier LEC32B33200 Service Manual page 47

5 TV failure
Fix the RF
set
Check if there
is I2C signal
at PIN &
PIN7 of TUNER1
N
Check the
Check the I2C
circuit
between
U1 1 and
U24 4
TV no channel
Check if there is RF
N
signal input
Check if there is
+5V at PIN2 of
Check if there is
intermediate
frequency signal
Y
output at PIN12 of
tuner
Y
U24 4
Y
Y
U24
4
Check the signal
circuit between
U1 1 and
- 47 -
Service Manual
Model No.:
Check the power
supply circuit to
N
this PIN2
U24
4