I removed the IC and the new resistance for VREG3 is 200kohm, with the 5v being its same measurement 1mohm. The switches are still low, but that may be by design. So should I order this chip and get it installed to see what happens?

I found this chip, which according to the [URL="https://www.ti.com/lit/ds/symlink/tps51225c.pdf?ts=1723085363774"]datasheet [/URL]is the step-down converter. You'll note this lovely hole near the SW1 pin, which measured 2.8kohm compared to SW2 which measured 9kohm. I also measured the 3v and 5v output, of which VREG3 had a resistance of 102ohm as compared to 1mohm from VREG5.

Something important: I inspected this chip when I got the laptop, as it produced some heat upon startup, but I did not see that hole on the top. I did not have the proper charger then, so my best guess...

I have desoldered the chip, and the laptop still isn't powering on. However, it is showing slightly different behavior from before. Pressing the power button shows the power LED on, but it turns off much quicker. Previously, it would take ~15 seconds to allow me to turn the device on again, but now it's nearly instant. Another thing that may be good, is that the CPU coils now have a steady .9v before the device turns off whereas before it was very unsteady.

Something of note, the CPU's coils' resistance to ground has lowered to 1.6ohm from 1.9ohm. I still think this is low, but I...

Sounds like the battery is likely the issue. Is it an original Asus battery or a knockoff? If it came from a reputable seller, returns should be easy enough. Also, try updating your bios, the report showed you are on an older one.

I received the charger earlier today, but I am not at my workshop during the weekday so my tools are limited. The device still does not power on but is charging the battery.

Voltage to the mosfets is 19.5v source/drain for both, 9.3v to the high side gate, and 8.3v for the low side gate. Upon power on, all CPU coils get a very unsteady 0.9v excluding the rightmost one in my first picture which has nothing.


I flipped the board and found an area of concern, this REALTEK ALC1306-CGT has a burn mark. I may have missed it on my first inspection. There are no blown capacitors...

I do not have photos of *my* board as I am away from my workshop during the week, but It would be on the flip side of the power connector, the dual high side mosfets. I was removing a burned mosfet and taking components off nearby to prevent them from being damaged during the removal and the 0201 resistor next to the drain side of the mosfet and the IC flew off my tweezers into neverland. I don't know the specification of it if, if you could get it for me I'd be in your debt.
[ATTACH=JSON]{"data-align":"none","data-size":"full","data-attachmentid":3318371}[/ATTACH]...

That is good to hear coil-wise. I have ordered the correct adapter which should arrive late next week. I do not believe this board uses any pin like the Dell PSID, but it would be a good idea to get one anyway. I will update this thread next week once the power supply arrives.

As for the CPU heating up once the power button is pressed, is 80 celsius ok in such a short span? I do not work on enough high-powered laptops but it seems a bit high for my liking....

Hello,

I have a similar board, also with no schematics . I measured the two resistors out of the circuit, resulting in 1Mohm on the right in the picture and 15kohm on the left in the image.

I am also working on my board repairing a burned power in mosfet. If you could kindly provide a closeup of that area, I would appreciate the help.

Regards,
Me.

Hello,

Please note that I mistook the source and drain pins so any markings would be swapped. Updated readings below

M1 - SD=470kohm, SG=240kohm, DG=680kohm
M2 - SD=650kohm, SG=rises from 180 to 240kohm, DG=643kohm

Side note: I've noticed my multimeter sometimes shows different readings depending on which directions the probes are placed. For example Mosfet 2, red on gate, black on drain shows 600kohm, but swapped shows 415kohm. I'm definitely in resistance mode, but my multimeter shares diode and continuity modes on the same dial selection. Would this...

Hello, today I'm working on this lovely MSI Raider GE75 gaming laptop which I bought to flip. Unfortunately, I believe the CPU is toast but I wanted a second opinion before I chucked it into my spare parts bin. I will not have most tools with me today as I'm away from my workbench but I have the basics (a good multimeter, a horrible iron, a solid screwdriver, and my trusty thermal cam). I do not have the original 230w charger, but I have a Dell 180w which was sold with the device and reportedly "worked fine for them".

Specs: I7-10750H, RTX 2060, 32GB RAM (unknown manufacturer)...

Hello,

I'm looking for the schematic for this device, and the boardview would also be appreciated if anyone had it.


Thanks in advance.

Hello all from the thumb of MI, USA.

I've been fixing things for as long as I can remember and fixing computers professionally since I was 15. While I am still young and have no formal training or education in this, I have had great success in diagnostic and replacement work for parts. I have always wanted to delve deeper into the actual component side of hardware repair, and I created this account to help my learning and understanding of this field grow. Please understand that I am not an electrical engineer, and don't understand many things about hardware, but I am always willing...