G.Beard
New member
Was liquid to q7010.
Plug in an 85W charger it will charge the battery and power the machine but the MagSafe gets very hot.
Same with known working IO board.
Machine powers from battery.
With a 45W Apple charger:
Sometimes PPDCIN fluctuates by about half a volt.
PPBUS sometimes fluctuates by 2 volts.
3V42 is always stable.
When the rails are intermittently unstable like this it will not power on.
Then sometimes ralls are all stable but PPBUS is sitting at 8.25V
Green / Orange
OS shows charger connected but does not charge.
I have randomly attacked and replaced the 6259, Q7010, IO board, Inrush limmitor, Q7155
I'm sure this is a simple problem, but I'm just not getting it.
Plug in an 85W charger it will charge the battery and power the machine but the MagSafe gets very hot.
Same with known working IO board.
Machine powers from battery.
With a 45W Apple charger:
Sometimes PPDCIN fluctuates by about half a volt.
PPBUS sometimes fluctuates by 2 volts.
3V42 is always stable.
When the rails are intermittently unstable like this it will not power on.
Then sometimes ralls are all stable but PPBUS is sitting at 8.25V
Green / Orange
OS shows charger connected but does not charge.
I have randomly attacked and replaced the 6259, Q7010, IO board, Inrush limmitor, Q7155
I'm sure this is a simple problem, but I'm just not getting it.