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820-00165 0 9amp DRAW
- Thread starter Instafixx
- Start date
Why do you expect 18.5V there?
Read the nominal output voltage marked on any Magsafe charger, according with its power rate!
8.19V is incorrect voltage and denotes bad communication between SMC and U7100.
Be sure R7100 is good.
Check voltage and diode mode to ground on SCL/SDA lines of battery bus.
You may have bad solders underneath SMC; should try reballing it.
If still the same, replace it.
Read the nominal output voltage marked on any Magsafe charger, according with its power rate!
8.19V is incorrect voltage and denotes bad communication between SMC and U7100.
Be sure R7100 is good.
Check voltage and diode mode to ground on SCL/SDA lines of battery bus.
You may have bad solders underneath SMC; should try reballing it.
If still the same, replace it.
"R7100 is .540"
I meant its real ohm value (between pins), not diode mode to ground.
I meant its real ohm value (between pins), not diode mode to ground.
That's good.
Did you try what I've suggested for the SMC?
Did you try what I've suggested for the SMC?
Instafixx
Active member
It worked for a day but now the device wont take charge no Magsafe light.
The machine is on.
Removed Battery and connected the charger. Same.
If we disconnect and reconnect J9500 , it will take charge sometimes.
It is working fine when connected to the PSU. Checked 2-3 times.
Is it that problem where it akes charge from a copy charger and not from an original charger ?
The machine is on.
Removed Battery and connected the charger. Same.
If we disconnect and reconnect J9500 , it will take charge sometimes.
It is working fine when connected to the PSU. Checked 2-3 times.
Is it that problem where it akes charge from a copy charger and not from an original charger ?
Reball, or change SMC...
Machine should work with original charger.
You didn't specify actual PPBUS_G3H and 3V42_G3H voltage (original charger).
If DCIN voltage is low, then check R/D7012 and Q7180.
You didn't specify actual PPBUS_G3H and 3V42_G3H voltage (original charger).
If DCIN voltage is low, then check R/D7012 and Q7180.