TROUBLESHOOTING GUIDE
E-3
No TV Picture
Replace Main PCB
Yes
No
Check if voltage
of U38 pin17 is 5V
Replace U38 HF
No Picture / LED is blue
Yes
Yes
No
No
Check if backlight is normal
Check the power and
control signal of CON2
in main PCB is normal
Check if voltage of HV
power PCB T1,T2 is normal
Replace HV power PCB
No
Replace Main PCB
Yes
Replace Main PCB
Yes
Yes
No
No
Check if connector
of CON10 is normal
Replace CON10
Replace LCD panel
Check if signal of
LVDS is normal