Hisense HX32N2170WTS Service Manual page 42

9. Function Trouble(ATV )
No channel be find
OK
NG
Check the RF cable for RF
signal
repair external RF
OK
equipment
NG
Check the Pin18/Pin24 of
UT1 for 3.3V.
1、Repair the power net
connecting to this pin
2、change UT1
OK
NG
Check the RT16 & RT17
for I2C data
OK
Repair I2C net
Check the RT10 & RT12
for IF signal
OK
Check the Software