having a 820-2850 board got liquid spilled,area around connector and led back light driver circuit.
got no back light.
PPVOUT_S0_LCDBKLT=12v , means not boosting.
checked:
D9701 both pins are 12v
lcdvdd en =3.3v
pwm= 0.3v
smc_lid=3.3v
pin 8 pin22 and pin 23 on u9701 all have correct voltage
changed connector and u9701 already.
feedback line trace is all good
only thing i can think of is the pwm signal is kind of low?
tried PRAM reset already.
any thoughts?
thanks
got no back light.
PPVOUT_S0_LCDBKLT=12v , means not boosting.
checked:
D9701 both pins are 12v
lcdvdd en =3.3v
pwm= 0.3v
smc_lid=3.3v
pin 8 pin22 and pin 23 on u9701 all have correct voltage
changed connector and u9701 already.
feedback line trace is all good
only thing i can think of is the pwm signal is kind of low?
tried PRAM reset already.
any thoughts?
thanks