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Tuner FM does not work
Tuner FM does not work
Go
Check voltage at XS1 pin2
(+5V) on Main Board whether normal
or not
Yes
Check
voltage
module (U184 Pin11) whether right or
not
Yes
Check Tuner U184 module PIN2 and
Pin20 normal or not
Yes
Check the U184 PIN9, PIN13, I2C
output on Main Board normal or not
Yes
Replace main Board
+3.3V
at
Tuner
5-7
No
Refer to Power Board CN504
No
Check Main Board tuner power supply
circuit.
No
Change the Tuner IC U184
Check
Main
No
supply circuit
Trouble shooting Chart
Board
U36
power
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