BenQ XL2411T Product Service Manual page 48

5.5.3 Power no work troubleshooting
Check I/F BD
Replace
IC851
Replace
D851,L851
Backlight did not
shine
LED-20V
OK ?
+5.0V OK?
Check CN701
PIN1 (BL-ON)
is HI?
Check CN701
PIN2 is HI?
(BRT-ADJ)
existed ?
Check IC801
OK?
Check D851, L851,
OK?
Replace
panel
- 48 -
Check D703
OK
Check D705
OK?
OK ?
Check F601,
Q601, OK?
Replace
IC601
Replace
D703
Replace
D705
D703 D704
Replace
F601,
Q601