BenQ M2400HD Service Manual - Page 51
W / LED, No Backlight
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24" LCD Color Monitor W / LED, No Backlight Check Inverter input =12V NG OK Check ON/OFF signal NG OK Check U801 PIN 11=5V NG OK BenQ E2400HD Check adapter and F801 Check Interface board or main board Change ON/OFF circuit Check U801 PIN8/PIN9 PWM wave NG OK Check U801 Check Q805, Q806 Drain wave NG OK Change Q805, Q806 Check the output of T801 NG OK Check connecter & lamp, feedback and protect circuit Change T801 51
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24” LCD Color Monitor
BenQ E2400HD
51
W / LED, No Backlight
Check Inverter input =12V
NG
OK
Check adapter and F801
Check ON/OFF signal
Check Interface board or main board
NG
OK
Check U801 PIN 11=5V
NG
OK
Change ON/OFF circuit
Check U801 PIN8/PIN9 PWM wave
NG
OK
Check U801
Check Q805, Q806 Drain wave
NG
Check the output of T801
Change Q805, Q806
Check connecter & lamp, feedback and protect circuit
OK
NG
Change T801
OK