820-3435 no lcd


New member
customer was told buy another store the bios is not working, after opening the macbook I found the board was never removed
green light fan spins
backlight on no lcd
bkl 21.91v
u5670 rabbit hole (why apple)
Im not 100% sure how the dp circuit works on these


Disconnect IO board flat cable to be sure that is not messing with anything. Actually disconnect everything besides the LCD. After that is does seem to be a ROM issue.