820-00165 0 9amp DRAW

[Instafixx]

PPBUS_G3H is 8.19V

PP3v42 is 3.42V

Machine not getting on.

 

[Instafixx]

SMC_RESET_L is 3.4V

PP18V5_DCIN_ISOL_R is 16.5V instead of 18.5V

No History of any corrosion. There was a lot of dust on the back side of the board. Cleaned it properly.

 

[Instafixx]

Diode Mode Reading to Ground

R7100 is .540

SCL/SDA Lines of the Battery Connector
Voltage 3.4V on both
Diode Mode
SCL is .553
SDA is .549

 

[Instafixx]

Ohms Scale
Red on Pin 1 and Black on Pin 2

i am getting 0.5 Ohms

 

[2informaticos]

That's good.

Did you try what I've suggested for the SMC?

 

[Instafixx]

SMC Reflowed. Its working fine till now. Thanks

 

[Instafixx]

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 ?

 

[2informaticos]

Reball, or change SMC...

 

[Instafixx]

I ordered a knock off charger. It is working absolutely fine on the knock off charger. Still SMC Reball ?

 

[2informaticos]

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.

 

[Instafixx]

On Original Charger there is no steady Voltage on PPBUS. Its 2V and reducing.
I ll check DCIN Voltage and update