LG Flatron W2234S Service Manual page 16

2. Backlight can't be turned on
No Backlight
Is there 16V
on pin9 of
IC501
OK
Check pin8 of
IC501, is there
3V?
OK
Check
Pin11&Pin14 of
IC501, it have
output or not
OK
Check
U501/U502/Q506
/Q501/Q505/T50
1/T502
NG
NG
NG
16
Check power
supply
Check I/F BD
R510/R511/C507
CheckIC501/R50
4/C503/C511