ASUS TUF FX516PM - no power

[mon2]

Remove all power and measure the resistance of these DCin mosfets again.

Measure:

source (1-2-3) & drain (5-6-7-8)
source (1-2-3) & gate (4)
gate (4) & drain (5-6-7-8)

No power to the board during these checks. Post each measurement.

[Gigabyte_PL]

Mosfet #1
source (1-2-3) & drain (5-6-7-8) -> 2,58M ohms (negative probe on drain and pluse probe on source) // 4,20M ohms (negative probe on source and pluse probe on drain)
source (1-2-3) & gate (4) -> 4,7M ohms (negative probe on source and pluse probe on gate) // 3,13M ohms (negative probe on gate and pluse probe on source)
gate (4) & drain (5-6-7-8) -> 7,5M ohms (negative probe on drain and pluse probe on gate) // 4,55M ohms (negative probe on gate and pluse probe on drain)

Mosfet #2
source (1-2-3) & drain (5-6-7-8) -> 5,5M ohms (negative probe on source and pluse probe on drain) // 1,65M ohms (negative probe on drain and pluse probe on source)
source (1-2-3) & gate (4) -> 4,70M ohms (negative probe on source and pluse probe on gate) // 3,15M ohms (negative probe on gate and pluse probe on source)
gate (4) & drain (5-6-7-8) -> 5,88M ohms (negative probe on gate and pluse probe on drain ) /// 6,37M ohms (negative probe on drain and pluse probe on gate)


I wrote down all combinations

[mon2]

So the mosfets look to be ok. Came across perhaps a nice discovery. The schematic for the FX516PC board appears to be the same.

See attached.

[Gigabyte_PL]

You think about main meansure resistor 0,5ohm ? I replaced it with 0.10ohm because that was the only one I had. Unless you have another discovery in mind?

I add file "capacitor.png" I can't find this element on boardview but it's look little strange if its capacitor. It's near to LAN RTL8111H

[mon2]

No - meant to say that we have a schematic available that is similar to your board so we can use it to study. Best to place the original current sense resistor back where it was located. It is very rare to have schematics for Asus boards but did find one in my (paid) database for the FX516PC.

[Gigabyte_PL]

mon2 I restored 0,5 ohm resistor.

[khaledmosa99]

i have same laptop with same dignos

[ewomer]

Did not realize that the posted boardview is a PDF version only. Go and grab a fresh download just posted that is a searchable version of the Asus FX516PM file. Will catch up on the other request after a quick trip to the grocery store. Using this inside of a BV viewer, you can click on the SDA pin and the entire network of parts will light up that are mated with the same.

https://www.badcaps.net/filedata/fetch?id=3202546

The SMBUS pull up resistors are @ R3020 (P_SMB0_DAT) and R3013 (P_SMB0_CLK). Check the voltage to ground on both sides of these parts - very carefully.

Do you happen to have any other non-pdf boardviews files? Like the Zephyrus G14 GA401QM?

[mon2]

Only the attached.

[ewomer]

Ok, thank you.