Hello to all ! I follow you but this is first time write !!
your forum is the best !!
so I’ve a2289 with water damage ! In first time other friend have clean and work ! But after some time stop working !
now, I open the MacBook and I see a lot of corrosion near backlight circuit (I attach some photos about that ) I think the problem is on backlight maybe bcs do strange boot then reboot (attach video ) I change some thing on the circuit like :
q8400
q8401
D8410
and the resistor R8431
if I check PPVIN SOSW LCDBKLT_R I’ve 12,9v
on LCD BKLT_EN_L have 12,9
bit on the line PPVIN_SOSW_LCDBKLT not have any voltage or like 0,014v
where in photo see all capacitors in red here no have any voltage !!!
can help me ? Thanks possible maybe the problem is other but have 20v and do boot with batteri like 1.780v and then go down step by step, only Mainboard go to 680mv then go down 580/430/339/320/180/0
your forum is the best !!
so I’ve a2289 with water damage ! In first time other friend have clean and work ! But after some time stop working !
now, I open the MacBook and I see a lot of corrosion near backlight circuit (I attach some photos about that ) I think the problem is on backlight maybe bcs do strange boot then reboot (attach video ) I change some thing on the circuit like :
q8400
q8401
D8410
and the resistor R8431
if I check PPVIN SOSW LCDBKLT_R I’ve 12,9v
on LCD BKLT_EN_L have 12,9
bit on the line PPVIN_SOSW_LCDBKLT not have any voltage or like 0,014v
where in photo see all capacitors in red here no have any voltage !!!
can help me ? Thanks possible maybe the problem is other but have 20v and do boot with batteri like 1.780v and then go down step by step, only Mainboard go to 680mv then go down 580/430/339/320/180/0
Attached Files
