Philips HTB3570/93 Service Manual

5-7 Trouble shooting Chart
Tuner FM does not work
Tuner FM does not work
Go
Yes
Check whether U11 and U10 work
good or not? And fix it or replace the
main board.
No
Check Main Board tuner power supply
circuit.
No
Change the Tuner IC
No
Yes
Yes
No
Yes
Replace main Board
Check Main Board U4 power
supply circuit
Check voltage +3.3V at Tuner IC
(Pin2) whether right or not
Check Tuner module IC Pin14,
Pin15 normal or not
Check voltage at Q28 C electrode
(+5V) on Main Board whether normal
or not
Check the U8 PIN25, PIN26, I2C
output on Main Board normal or not

Philips HTB3570/93 Specifications

General

Brand	Philips
Model	HTB3570/93
Category	Home Theater System
Language	English