820-01814-01 dead amp meter flashing light

[Soji]

The board came in dead, ammeter flashes light every 2sec,no display on ammeter.
No shot on pp20v_usbc_xa_vbus

 

[2informaticos]

All the ports have the same behavior?
Check diode mode to ground on the CC1/2 lines.

 

[Soji]

Yes all the ports has the same behavior
USBC_XB_CC1=0.984
USBC_XB_CC2=0.981
USBC_XA_CC1=0.986
USBC_XA_CC2=0.980

 

[2informaticos]

Check and compare values between all 4 ports.
Also check diode mode to ground on PPBUS_G3H, 3V3_G3H_RTC and all big coils.

 

[Soji]

I found a short on ppbus_g3h on precisely on u9080.hmmm
I guess the nand flash is fried
Any solution. Thanks

 

[2informaticos]

If the short comes from a NAND chip, change all NANDs maintaining correct order.
You can get them from donor board, or Aliexpress (marked chips in kit).