HP LE1851w

18.5" LCD Color Monitor HP LE1851w
35
2. W/LED No Backlight
Check Q805 =12V
NG
OK
Check Q805
Check ON/OFF signal
Check Interface board
NG
OK
Check IC801 pin2=5V ?
NG
OK
Change D817,R827
Check the pin1 of IC801 have saw tooth wave
NG
OK
Change IC801
Check Q802 has the output of square wave at short time.
NG
OK
CheckC802/C824/R839/R850
Check the resonant wave of pin2 & pin5 for T801
NG
Check the output of T801
Check C839/R855/R856/C838
Check connecter & lamp
OK
NG
Change T801
OK