820-3476 not booting completely and not recognizing the battery

[Sr. Robot]

It turns on and it will load the bar to 100% but it wont go into the OS. Sometimes it turns on keyboard backlight and caps light, but no login screen. (tried several SSD´s)

Tried with everything disconnected, no change.

It wont load MacOS install USB neither.

NVRAM and SMC reset do nothing. Safe mode and SMC bypass mode wont work

It will load Windows bootcamp, but wont recognize the battery (battery is known good).

 

[2informaticos]

Original 85W Magsafe 2 charger?
Its light switch to amber?

Check diode mode to ground and voltage on SCL/SDA lines of battery bus.

 

[Sr. Robot]

Original 85W Magsafe 2 charger?
Its light switch to amber?

Sorry, i had an error in the tittle. It recognizes the charger all right. The battery is whats not recognized.

Check diode mode to ground and voltage on SCL/SDA lines of battery bus.

Diode modes:
SCL: 0.00
SDA: 453

SMBUS_SMC_5_G3_SCL is shorted. I removed D7050 but no chanage. Could it be shorted under J7050?

 

[2informaticos]

If is pure short, you should find the culprit with voltage injection method.
1V may be good enough for that; if not, slowly increase, no more than 4V.

 

[Sr. Robot]

It was the ISL, even though it was drawing almost 1 amp at 4v it wasnt generating noticeable heat. I removed it just in case and the short was gone.

Thanks a lot.