Again a new problem, my charger is going down xD I have now 0.02V on it...

I have good news!

I went to see a technician friend of mine, and he validates the failure of the PL103 as well as the PR102 maybe, but first concentrate to PL103, with a good magnifying glass we can clearly see that it burned there was white deposit around but it had to be seen, in continuity test, the PL101 and PL102 sound and give me the correct resistance 0.00ohm since they are power inductors and it is normal that it displays this value, the PL103 on the other hand does not react to the multimeter and displays OL, a power inductor if it is found open as displayed OL on the...

I just finished the tests. Each 19V_VIN point gives me 0.53V, which is the voltage coming from the charging port.
I’m also attaching photos of the PQB11 area, as well as the PL103/PR102 area, where it looks like the capacitors may have melted. Since PL103 is also a 19V_VIN point to measure, it also gives me 0.53V.
Only the two MOSFETs, PQB11 and PQB12, need to be measured. On which pins should I place the multimeter probes to test drain/source/gate? I have serious doubts about this....

Okay, I’ll do the tests tomorrow, but what happens if I find 19V, or if I don’t find 19V on any of them? Where would the problem be located? That way I can learn from you

If I understand correctly, I need to test each 19V_VIN and the measurement should be the same everywhere? And this voltage should also be the same on PL101?
According to the schematic, I should test by placing the black probe on GND, and the red probe on the third pin for the 19V_VIN of PDB1, and on the side marked “1” for PRB44 and PRB47 ?

Is it indeed to the left of PRB47 that I should place my red probe? If it’s on the left, I get 0.53v, but if I put it on the right, I find 2.81v.
When I do the resistance test, placing the red probe to the left of PRB47, I get 0.

Ohoh, I have 0.53v on the 3rd pin , and OL on the 1st pin

Oh, and I remember when I dessasembly the laptop, some liquid around the 2 mosfets PQB11 and PQB12, also PCZ65 and PCZ47, with a light burn smell, I think probably the 19v rail is the faulty but don't sure, I search how to measure the 2 mosfets exactly with the correct measure

The test of PDB1 gives me 0.38v between pins 3 and 1, and in the reverse I get OL.
Between pins 2 and 1, I also get 0.38v, and in the reverse I also get OL.

ACDET gives me 2.62V...

So, when I test the charger just plugged into the wall, I get 19.70v. Then, when I connect it to the PC and test PL101 to ground, I get exactly 0.53v. Same as PJP101.
I disconnect the charger and test it again, it shows 2.51v, as if the charger went into protection mode. But I can get back the charger in normal value by unplugging and plugging it back in.

I have 2 missing ceramic capacitors, PRB3 and PRB46. PRB49 is also slightly damaged. I’m not going to replace them for now; I mainly want to figure out why I’m getting this voltage drop, especially since my PC suddenly...

I also add that the capacitor PRB3 and PRB46 are no longer present, probably HS

The power supply provided 19.70v, and work on an other laptop

PL101 has 6k ohm and 0.53v also like the DC-IN jack

PQB4 not found on my motherboard, and not found on my boardview file

Hello, I introduced myself on the forum and followed the rules. I own an Acer Nitro 5, model AN515-55-51QY, which has completely broken down. When I open NitroSense, it shut down entirely. I can’t turn on the PC with or without the charger—it makes no difference. No lights appear. I tested the DC IN port to connect the charger and measured 0.533V on my multimeter. Normally we need to find 19v on PJP101 DC-IN connector, right ? I’ve done quite a few tests on the capacitors; only PRB49 shows 0.000 ohm, which I believe is faulty. I can’t measure PQB11 and PQB12 because boardview don't show...

Hello, my name is gLx, I’m 30 years old and I live in France. I’ve been passionate about electronics since I was a child, and I’m always looking for new challenges every day. Cheers