SOLVED: A2485 020-02100 - Short on PP1V2_NAND0 20V 0A

[it-solve]

Removed LN430, short stays on the NAND side.
Injected 0.9V, sinks up to 1.3A and no heat signature on the board or SSDs.

No direct liquid. Some corrosion around CN139/125/147 caps as well as CT054
No other shorts

 

[2informaticos]

You can go up to 1.4V with voltage injection.
Use an IR camera...

 

[it-solve]

Even at 1.2V 3A I am not getting any heat spot apart than the tip of the probe I am injecting with

 

[2informaticos]

Be sure to inject in the correct point.
Use powerfull cables and set amp limit to max first.

 

[it-solve]

PP1V2_NAND0 side of the coil is the one which has low resistance

I soldered a wire and pushing 1.2V. It pulls 5.2 and sinks it somewhere but no heat spots on either side of the board apart than the cable. That must be a dead short to the ground plate of PP1V2_NAND0?

 

[2informaticos]

Use ticker cables.
You don't want to heat the cables, but the culprit on the logic board.

 

[it-solve]

Located the issue to bad components around UN100. Thanks again.

Some references for future cases:
> PP1V2_NAND0 - 6Ohm
> P0V9_NAND0 - 100Ohm