820-01598 Won't charge (only the first time!)

[Sajtisajti]

Hmm 820-01598 its charge when i freshly connect the battery to the board, if i disconnect charger and connects again it will not charge..

Without battery its works well always! (dont have another battery to try with)

C7034 was blowen up, thats PPDCIN_G3H_CHGR.
Is there a way that Q7030 damaged in the process and can do that?
I could not find short to gnd.

When its not charge its shows 20.48V 0.041A On F7000 i can measure 11V only.

Any idea?

[mon2]

Re: 820-01598 Won't charge (only the first time!)

Review Q7065 mosfet.

Remove all power. No battery. Meter in resistance mode.

Measure the resistance between

Source and drain
Source and gate
Gate and drain

Post each measurement.

[Sajtisajti]

Re: 820-01598 Won't charge (only the first time!)

Review Q7065 mosfet.

Hey! Thank you for your help
Sure no pwr on board

Source and drain: (Red Pin 1-2-3 and black pin 5)
Something is chargeing up. i put the probe there with 80kOhm function. its shows 60kOhm and increase, there is no constant ohm there.
If i set 800kOhm setting its shows 460kOhm..
In diode red probe on pin 1-2-3 black probe at pin 5 it 1.860
If i change probes its 0.133

Source and gate at resistance
Red probe on pin1-2-3 black on pin4 constant 10MOhm
changed polarity 2.7MOhm
In diode Red probe on pin1-2-3 black on pin4 1.740
changed polarity 1.100

Gate and Drain resistance
Red on pin 4 black on pin 5 5.5MOhm
reverse 2.96MOhm
in diode Red on pin 4 black on pin 5 2.240
reverse 1.746

Update:
Meanwhile, another such machine came in. Its act like same with another battery, i cant compare the two boards atm cos its has short to gnd on ppbus_g3h and they need to order the repair. :/ Atleat the battery is good.

[Sajtisajti]

Re: 820-01598 Won't charge (only the first time!)

Update 2
When i have done smc reset its started to charge again and left that 20.20v 0.049-0.037A state. May i need to run a dfu?

[Sajtisajti]

Re: 820-01598 Won't charge (only the first time!)

Damn, tried a bunch of stuff. I think its a T2 problem. Tried revive with dfu, same shit.
Replaced U7000 too, nothing. Same stuff. : /