Philips 37PFL7422/79 Service Manual page 16

16
TPT1.2A LA
5.3 Repair Flow Chart
1.No work/LED is off
power switch is
IR board CN001
pin1=0V,pin2=3.7V,
pin3=3V,pin4=2.85V
,pin5=5V,pin6
Check scaler board U102
pin1=14V,pin4=1.22V,
pin7=16V,pin8=5V,
5. Service Modes, Error Codes and Fault Finding
Check if
normal
Yes
Check
=3.3V
Yes
No
Replace Power switch
No
Check IR board