Vostro 3401 strange problem charge

[the Benninger]

Now the one offering apologies is me, I was working on the bottom side, when I looked at this part that you pointed out, I noticed the marker that is above PQ1 and not in PL3. The aggravating factor is that it was on the inductive coil PL301 on the bottom side, regarding the resistor PR1=33.2 ohms on my multimeter

the measurements of PQ1 are

Source/Drain= 65.2k
Source/Gate= 12.48k
Gate/Drain= 73.5k

[the Benninger]

I have no way of knowing if pq1 is good or not so I have made the decision to change it, while the resistance PR1 is at its correct value, which leads me to think that it is pq1 that causes the source to disassemble when reconnecting.
If you have anything else to add, I would be grateful; if not, we will just wait for the arrival of the components.

[mon2]

These are very low resistance readings for a good mosfet:

Source/Drain= 65.2k
Source/Gate= 12.48k
Gate/Drain= 73.5k

Each should be hundreds of k ohms or higher. One reason could be the influence of other parts on the part so best to remove and then test the same mosfet while it is on your workbench. If the resistance readings remain low, the part is indeed defective. Curious on the measurements of this mosfet that has been removed.

reference reading:
https://electronicsbeliever.com/how-...-defective/

[the Benninger]

disassembled or out of the motherboard the readings were as follows

Source/Drain=72k
Source/Gate = 750M
Gate/Drain = 1050M

[mon2]

Reverse the meter leads and test source / drain but to me, this part is defective from the low resistance.

Source/Drain=72k

[the Benninger]

happy start of the week
something happens that I don't know if it's normal, when the reading started (38Mhom) it increased until it reached 60Mhom, in a span of 1 minute. I think it would have continued to increase if I hadn't lost connection. It's difficult to keep the test probes on the pins when it's disassembled due to the shape and size.

[the Benninger]

hello I bring news around here, replace the PU301 in addition to PQ1, the new thing is that it is no longer heating, but the machine still does not turn on, not even the charging LED
I made some readings that I attached in the image, when I made the mistake of incorrectly bridging on the coil (PL301) is when I immediately lost it, so the question is do you know which other component suffered from this?

[Sephir0th]

Voltage measurements are usually less than half of the picture you need.

Measure resistance to GND of Pin 9, 11, 12, 17 and 20 and share the readings here.

PS: it's still puzzling how the PU301 has failed this bad. Normally nothing bad should happen when connecting a 3V supply to a signal which is supposed to be supplied with 3V too. At least not with such serious damage.