no backlight on 820-2936-B

spakhnyuk

New member
Working on a 820-2936-B with no backlight. No known liquid damage.

F9700 is good.

Have 11.09V on and .597 diode mode measurement PPVOUT_SW_LCDBKLT
Have 3.2V on P3V3_LCDVDD_SW_F
Have 3.3V on PP3V3_S0_LCD_F

Any idea why I don't have backlight?
Thanks
 

aprendiz

Moderator
Voltage on BKL_EN?? also 11.09V only battery i guess, if you have this voltage on PPVOUT_SW_LCDBKLT means no boosting, check feedback trace.....
 
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