[SOLVED]820-2850 no backlight only 24v on PPVOUT_S0_LCDBKLT

[speedyaction]

hi guys. i have board 820-2850 with no backlight. voltage checked:
BKLT_EN : pin 4 3.12v (is that a problem?)
PP5V_S0: pin 23 4.95v
d9701: pin 1 12.61v pin 2 24v
not sure what i need to check more. still learning anybody can help. its emergency job !!!

 

[dukefawks]

PRAM reset and then check BKL_PWM.

 

[speedyaction]

done PRAM reset and BKL_PWM is 2.42v on pin 2 U9701

 

[dukefawks]

That is fine. So BKL_PWM and BKL_EN are present and BKL voltage at LCD connector is 24V now?

 

[speedyaction]

don't know whats happen here but i took bigger fuse is normaly original on board and now is working i have 33.45v on backlight output now thx for help