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