Table of Contents
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5 TV failure
Fix the RF
set
Check if there
is I2C signal
at PIN6 &
PIN7 of TUNER1
N
Check the I2C
circuit
between
U11 and
U24
Check if there is RF
N
Check if there is
Check if there is
frequency signal
Y
output at PIN12 of
Check the
tuner
TV no channel
signal input
Y
+5V at PIN2 of
U24
Y
intermediate
U24
- 47 -
N
Y
Check the signal
circuit between
U11 and U24
Check the power
supply circuit to
this PIN
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