Repair Flow Chart - AOC L32W751A Service Manual

32" LCD TV

5. Repair Flow Chart

5.1. No Power (No LED indicator)
Check CN902 pin3, 4 = 12V
Check AC line volt 110V or 220V
Check the voltage of C907 (+)
Check start voltage for the pin8 of IC903
OK
Check the auxiliary voltage is bigger than
10V and smaller than 20V
OK
Check IC903 pin5 PWM wave
Check Q903, D915, R936, R975, R925, IC907, IC908
OK
NG
OK
OK
NG
NG
OK
NG
OK
NG
NG
Check adapter or main board
Check AC input
Check bridge rectified circuit and F901 circuit
Check R963, D902, D901, L906
1) Check IC903
2) CheckT901, C918, R945, D913
Check IC903
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AOC L32W751A