820-01987 5V 0.06A

[ChronoInfo]

Board looks pretty clean no liquide damage

PP3V3_G3H to pin 1 from L7690 3.29V stable

PPBUS_G3H 12.30V stable

PP3V3_G3H_RTC 3.3V stable

 

[2informaticos]

No voltage on any other big coil?
Also check SSD and G3S voltages.

 

[ChronoInfo]

L7670 0.027V but no short

How to check ssd ?

 

[2informaticos]

That's no good.
Something connected there is bad.

Just in case, check again after 15s, once charger and battery removed.

 

[ChronoInfo]

check again after removed charger and battery same problem

 

[2informaticos]

You should find the culprit.
A good IR camera may help you to locate it.

 

[ChronoInfo]

i've good IR camera nothing heat
on Q7660 VIN ok 12.30V and out 0.05V is it possible bad Q7660 ?

 

[2informaticos]

"L7670 0.027V but no short"
Was that voltage, or diode mode reading?

 

[ChronoInfo]

voltage reading not diode mode reading

 

[2informaticos]

"but no short"
Better to know diode mode reading instead.

 

[ChronoInfo]

L7670 0.400V diode mode

DFU working

 

[ChronoInfo]

Solved revive on apple configurator
t2 chip can lock 5V