AOC 2036Va - Page 40

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8.2.2 Power/Inverter Board
1.) No power
Check ZD901 =14.5V
Check AC line volt 100V or 240V
Check AC input
Check the voltage of C907 (+)
Check bridge rectified circuit and F901 circuit
Check start voltage for the pin8 of U901
Check R908, U901
NG
Check the auxiliary voltage
1) Check U901, T901
2) Check D902, D905, D906
OK
OK
NG
Check Q901, Q904, U902, U903
OK
Check U901 pin5 PWM wave
OK
Change U901
NG
NG
NG
OK
NG