A1466 820-00165-A no backlight

[hgoncalves]

Hello,

I have an 820-00165-A with no backlight. It has image and USB activity.

The F7700 has 8.5V, and 3.3V on EDP_BKLT_EN/Q7707.
D7701 has 8.5V
BKL_EN = 2.8V
BLK_PWM = 3.1V

All return resistors are good (0 ohm).

Already reflow U7701, but no still backlight.
Can you help?

 

[2informaticos]

Did you check XW7720?
If good, change U7701.

 

[hgoncalves]

Replacing the U7701 solve the problem. Thanks.