Philips HTB3560/12 Service Manual page 28

Tuner FM does not work
Tuner FM does not work
Go
Check voltage at Q28 C electrode
(+5V) on Main Board whether normal
or not
Yes
Check voltage
module (TUN1 Pin8) whether right or
not
Yes
Check Tuner module TUN1 Pin11,
Pin12 normal or not
Yes
Check the U8
output on Main Board normal or not
Yes
Replace main Board
+3.3V at Tuner
PIN25, PIN26, I2C
5-7
No
Refer to Power Board XP501
No
Check Main Board tuner power supply
circuit.
No Change the Tuner module
Check Main
No
supply circuit
Trouble shooting Chart
Board U5 power