X555LD Rev2.0 No Power No Mainboard Could you help

[carso]

Hello there
X555LD REV 2.0 i7 4510u processor

I closed and moved it while working, when I tried to open it again, there was no response

I took the motherboard out and tested the power line with a multimeter

I/O was heating up, we tried plugging in another chip, now the same chip doesn't heat up but still no power

They said the processor south passed away but I want to be sure. What check should I do with the multimeter?

[mon2]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

Update:

False alarm. See attached.

Put away the non-alcoholic beverages. It is a capacitor and the readings are ok.

[carso]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

Update:

False alarm. See attached.

Put away the non-alcoholic beverages. It is a capacitor and the readings are ok.

i think about it

I couldn't clarify whether this is the coil of the processor, I don't have a schematic reading

So there's 19V to this marked place, where does it come from?

[mon2]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

I believe to have both, the boardview and schematic files for this logic board or something very close to it. Will post more details after some beauty rest.

In the meantime, the parts you show are the typical dcin mosfets.

Post the markings from the top surface of each mosfet do we can compare notes.

Remove all power. Meter in resistance mode.

Check the resistance across the mosfet pins as usual:

Source and drain
Source and gate
Gate and drain

See the many many posts here on this forum about the same checks. If the resistance is too low, then the mosfet is defective and must be replaced.

Do note the pin #1 of the original mosfet so it can be replaced. Take close up pics and post them here.

Quite often, one or both of these mosfets get damaged. Read the sticky above from @Piernov for more details.

[DanielDacko]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

Here is the boardview and software used for viewing it.

[carso]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

I believe to have both, the boardview and schematic files for this logic board or something very close to it. Will post more details after some beauty rest.

In the meantime, the parts you show are the typical dcin mosfets.

Post the markings from the top surface of each mosfet do we can compare notes.

Remove all power. Meter in resistance mode.

Check the resistance across the mosfet pins as usual:

Source and drain
Source and gate
Gate and drain

See the many many posts here on this forum about the same checks. If the resistance is too low, then the mosfet is defective and must be replaced.

Do note the pin #1 of the original mosfet so it can be replaced. Take close up pics and post them here.

Quite often, one or both of these mosfets get damaged. Read the sticky above from @Piernov for more details.

Do you have the X555 full schematic? can you share it?

Which is the mosfet that controls the processor (to check if there is a short circuit)

Your help is very helpful

[carso]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

Hello

This is where I start checking the circuit.
when performing a robustness test at the diode location with a multimeter
I did it without realizing it. The device worked and displayed as it appeared.
I made a chassis with a multimeter.

Screen VİDEO

https://youtu.be/ePvnlFyyVGo

İmage

[mon2]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

Test without the RAM stick. Any difference?

[carso]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

Test without the RAM stick. Any difference?

It works on ram with its old version.

there is no problem, it works with its current state, it is very strange

Thanks for everything, for adding something.

[t.danes]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

what are the designations and values of these components? one is a capacitor and the other is a resistor, I just don't know their value. thanks for the help, I didn't find the schematic, if someone has I would be grateful

[mon2]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

Attached.

R2525 = 0402 size as well.

[t.danes]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

Attached.

R2525 = 0402 size as well.

Thanks

[Serg9798]

Re: X555LD Rev2.0 No Power No Mainboard Could you help

Thank you very much.