Alan.L
Member
initially, the board couldn't see the original apple charger but works well with PSU/fake charger.
so I changed Q1780 and it still didn't work then I changed ISL and works for a few hours with original apple charger but later on, it stops working.
then I changed Q1780 and ISL at the same time in case it will kill ISL or Q1780 but it still not working.
then i changed Q1780, ISL, SMC and now it is working, passed ASD and can charge the battery with no problem
with a fully charged battery, sometimes the charger's green light goes out. i'll have to turn off the charger from the mains then turn it on then i get a green light.
with charger only
------------------------
PPBUS_G3 = 12.58v
PP3V42 = 3.399V
with battery
------------------------
PPBUS_G3 = 12.75v
PP3V42 = 3.399V
with battery and charger
------------------------
PPBUS_G3 = 13v
PP3V42 = 3.399V
Resistance on 17/18, 27/28 OF ISL. = 4 ohms, 20 ohms
Resistance to ground on the DC-in fuse = 68.1k ohms
so I changed Q1780 and it still didn't work then I changed ISL and works for a few hours with original apple charger but later on, it stops working.
then I changed Q1780 and ISL at the same time in case it will kill ISL or Q1780 but it still not working.
then i changed Q1780, ISL, SMC and now it is working, passed ASD and can charge the battery with no problem
with a fully charged battery, sometimes the charger's green light goes out. i'll have to turn off the charger from the mains then turn it on then i get a green light.
with charger only
------------------------
PPBUS_G3 = 12.58v
PP3V42 = 3.399V
with battery
------------------------
PPBUS_G3 = 12.75v
PP3V42 = 3.399V
with battery and charger
------------------------
PPBUS_G3 = 13v
PP3V42 = 3.399V
Resistance on 17/18, 27/28 OF ISL. = 4 ohms, 20 ohms
Resistance to ground on the DC-in fuse = 68.1k ohms
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