820-01958 charges the battery but won't power up

[kjchatman]

this board is charging the battery because it ramps up to 1.8 amps on the meter. it will go into dfu and it will go through a revive but it never powers up at all. pm_slp_sus_l is 3v . pm_slp_s5_l is 0v. is this a chipset issue?

 

[2informaticos]

Do you get SSD and G3S voltages?
If no important data, do DFU restore; many times, revive is not enough.

 

[kjchatman]

i have another board that is the same model and it has 1.5 ohm resistance on ppbus.

 

[2informaticos]

That is pure short!
Remember to remove any power from the board and allow 10-15s before measuring diode mode, or ohm scale.

 

[kjchatman]

i think that this board has an internal short. using the thermal cam, It get visibly warmest around r5600 when i inject voltage on ppbus. i've removed all components from that area and it still does the same. I dont see a burn though

 

[2informaticos]

Did you check if have same value on any big coils?