820-3435-b no backlight, fuse keeps blowing

bruce1129

New member
PPBUS G3H 8.6
VOLTAGE ON LCD BACKLIGHT BOOST 39V
CHANGED BACKLIGHT IC, NO LUCK. NOT SURE WHAT I AM MISSING.
any suggestions are welcomed.
(did find a few resistors on PPVIN_S0SW_LCDBKLT that do not measure in ohms correctly, but i replaced them (and measured before i did) and its almost like they measure incorrectly only when on this board.
board is water damaged, and yes ive confirmed its the backlight, and its not the lcd i tested it with a known working lcd .
 

bruce1129

New member
Its blowing randomly as far as i can tell. ive had to replace it 3-4x already
just looked inside the connector with the microscope, its burnt out on the inside. around the backlight pins.
 
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