820-3115 no backlight

Kyle93

Active member
Arrived with liquid damage all around lcd connector and other side of the board. Replaced everything. Powers on, chimes but no backlight.

J9000 pins 2 and 3 are 3.4v pin 4 3.4V

U9701 replaced but feedback TP was burned. Ran jumper to PPBUS_SW_LCDBKLT_PWR but still no backlight and diode mode is .408

What to check next? Using a known good screen
 
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