Philips 37PFL7422/79 - Page 19

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TPT1.2A LA
5. Service Modes, Error Codes and Fault Finding
4.No TV sound
Check if
tuner TU201 pin11
output IF signal
No
Replace TU201
Yes
Check U301
6.No remote function
Tty another
remote control
No
Replace one good
remote control
Yes
Check IR receiver
5.No earthphone sound
Check
U760 pin15=3.3V
No
Eliminate short and open
situation
Yes
Check U760
pin20=HPOUTL
pin6=HPOUTR
No
Replace U760
Replace Side AV Board
Yes