820-01041 - No power

[overshoot]

Hi,

I have a spotless board which won't turn on.
I assume those board should not need a battery to give me CPU_Vcore as the A1707 do, am I correct?
I am expecting to get around 1amp with the bear board and then down to 0, even with no screen, no battery.

The board goes from 5V to 20V (draws .25A during the process) and then draws 0.17A for a second or 2, then 0.2A for another second and down to 0A where it stays.
Is there a possibility that this board needs a T2 Firmware update?

PPBus_G3H is a nice 12.6V.

Thanks!

 

[2informaticos]

You don't lose too much time trying to put in DFU restore.
Usually T2 firmware issue keeps PPBUS_G3H at 12.3V, but god knows all behaviors can generate T2...

 

[overshoot]

FYI, it was just a battery issue. These boards need a battery or will have that behavior.

 

[2informaticos]

Thanks for the feedback.
We still need to collect lot of information about about T2 boards....