Specifications

20” LCD TV Color Monitor AOC L20S421
19
6. Repair Flow Chart
1. No Power (No LED indicator)
Check power cord
and board interface
NG
Plug in power cord and interface
Check F901, BD901
Replace F901 or BD901
Check the circuit
Check IC901 Q901
Replace IC901 or Q901
Check T901
Replace T901
Check D904, D905
Replace D904, D905
Replace Q903, ZD902,
IC903 IC902
Check Q903, ZD902, IC903 IC902
and relative circuit
Check Q906, IC905 and relative circuit
No Power
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK