820-01700 No power

[Sr. Robot]

Hi, got an 820-01700 with no power.

C9581 was corroded and replaced.

PPBUS_G3H = 12.26 v

PP5V_G3S = 5.1v

PP3V3_G3H_T = 3.3v

PP3V3_G3H_RTC_X = 3.3v

PP1V8_G3S = 1.8v

PPVCC_S0_CPU = 0v

 

[2informaticos]

Corrosion near U9580 sounds bad.
Check diode mode to ground on L9080/580; compare with good board.

 

[Sr. Robot]

Sorry, i dont have a good board to compare.

L9080 = 0.374

L9580 = 0.358

 

[2informaticos]

The values look good.

Do you get SSD voltages?
Tried DFU?

 

[Sr. Robot]

I get:

PP2V5_NAND_SSD0 = 0v
PP1V8_SSD0 = 1.8v
PP0V9_SSD0 = 0.9

PP2V5_NAND_SSD1 = 2.5v
PP1V8_SSD1 = 1.8v
PP0V9_SSD1= 0.9v

No DFU Mode

 

[2informaticos]

May have luck changing U9580.
Be sure all R9580/1/3/8 are good.

Just in case, be sure R9598 is also good.