Dell G3 3579 LA-F611P dead after small fix

[reassor]

Hi all. There was a charger problem where when u plugged it in with battery connected it was disconnecting the charger or not charging at all.
Found 1 cs resistor was0 ohm instead of 2.2ohm. Replaced it and now...

Fans just jerk cpu starts but shuts down after like 10 secs.
But now i have no leds from EC and no post. All junk around is like on schematic.

Is there a way of checking ec before replacing it?

[mon2]

Sounds high for the current sense resistance. Maybe should be 2R2 milli-ohm? (Not 2R2 ohms)

this replacement can cause this fault.

[reassor]

PRB03 was 0 Ohm. After the change i went back just to check. its still same.

Both of these ressistors are same now.

[reassor]

Sounds high for the current sense resistance. Maybe should be 2R2 milli-ohm? (Not 2R2 ohms)

this replacement can cause this fault.

did i read the schematic right?

[mon2]

These 2 resistors are indeed 2R2 ohms each. The values are critical. Post a larger view of this part of this schematic. Confirm the resistance of the full path of these resistors matches the sum of the values in the schematic.

[reassor]

These 2 resistors are indeed 2R2 ohms each. The values are critical. Post a larger view of this part of this schematic. Confirm the resistance of the full path of these resistors matches the sum of the values in the schematic.

Indeed these do 4.4 ohm on the cap.

Here is the whole Charger.

[mon2]

Adapter the original? Check the voltage to ground on the adapter ID pin. Used by the EC to determine the details of the power adapter.

original issue is often a leaky dcin mosfet. Remove all power and check the resistance across the mosfet pins of the dcin mosfets:

Source & drain
source & gate
gate & drain

post each measurement.

[reassor]

Adapter the original? Check the voltage to ground on the adapter ID pin. Used by the EC to determine the details of the power adapter.

original issue is often a leaky dcin mosfet. Remove all power and check the resistance across the mosfet pins of the dcin mosfets:

Source & drain
source & gate
gate & drain

post each measurement.

Yes original chargers 2x 130w and 1 240w

do you mean these mosfets? (dcin changes to +SDC_IN here)

S1
S-D = 0.65M
S-G = 1M
G-D = 1.63M

S2
S-D = 0.55M (slowly climbing (big cap?)
S-G = 1M
G-D = 1.6M (slowly climbing (big cap?)

These are dcin (imho)

ID pins work on other dells and iirc they should have 3.3v if they work (thats the 1 wire line as i understand it)
EC registered even a 2 pin input from my lab power source and it was just sain uknown charger and didnt charge ... But now EC looks like its bonkers - no leds at all (got kb_led lol)

Tried bios - same
Tried w/o bios to see if Bridge will boot (nope) (so bridge works even tho a little hot)

There is even cycle movement on amps when you plug it in but then it just shuts down. (no fans no leds (power + charging)

Also power button has all voltages but ec does not care. Those are the reasons im looking at ec.

I dont care about charging at this point

[mcplslg123]

PU01,pin5 has 3.3V?

[reassor]

PU01,pin5 has 3.3V?

yes

[reassor]

Just to let you all know how it ended - Fricking SIO oscilator....