Acer V193 Product Service Manual page 59

5 Power Board no work troubleshooting:
Check I/F BD
No
Replace IC801
Replace Q808,
Q810, T801, T802.
No Backlight
V-inverter ok?
Yes
+5V ok?
Yes
Check CN701 pin2
No
(BL-ON) is Hi?
Yes
Check CN701 pin1
(BRT-ADJ) exist?
Yes
Check IC801
No
OK?
Yes
Check Q808, Q810,
No
T801, T802 OK?
Yes
Check Panel
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Check
No D701/D702 No
OK?
Yes
Check
No D703/D704 No
OK?
Yes
Check F601,
No
Q601, R615 OK?
Yes
Reaplce IC601
Replace D701/D702
Replace D703/D704
Replace F601,
Q601, R615.