15.6" LCD Color Monitor HCL HCMDLWBT21&HCMDLWBN21
34
No backlight
Check the input voltage of 12V
NG
OK
Check adapter and F801
Check ON/OFF signal
Check Interface board or main board
NG
OK
Check IC801 PIN12=12V
NG
OK
Change on/off circuit
Check IC801 PIN5 have triangle wave
NG
OK
Change IC801
Check IC801 PIN9/PIN10 PWM wave
NG
OK
Check IC801
Check Q802 Drain wave
NG
Check the output of T801
Change Q802
Check connecter & lamp, feedback and protect circuit
OK
NG
Change T801
OK
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