Dell E7240 no powerI need help identifying

[the Benninger]

Hi folks

Don't power, making voltage injection desire PU100 is in short heats to almost 90 degrees celcius

The problem is that I don't know his name doesn't appear on the boardview, and I'm looking to replace him with what I read on boardview is IC for powermagnamet

Model:E7240
MoBo:VAZ50 LA-9431P Rev:1.0(A00)
CPU:i7

PD:take a picture as best I could with the help of a digital microscope you can see something like (T2858) no reference to this number in DataSheet matches it has a total of 20 contacts 5 on each side of the package
I'm very grateful beforehand

[mon2]

Perhaps:

TI # TPS51285BRUKR

https://www.ti.com/lit/ds/symlink/tp...oogle.com%252F

Confirmed.

[the Benninger]

thanks so much mon2 very fast and accurate response, you have an incredible database I lack tools like those in any way I am very grateful the honor is yours I will write the result of the repair

[the Benninger]

Good day, updating the status of this repair, yesterday I received the component I changed it, however nothing has changed it continues to heat up in the same way I must find a capacitor that will be causing this

[the Benninger]

[mon2]

Remove all power. Meter in resistance mode.

Measure the resistance to ground of the LDO rails on this regulator with names VREG3 and VREG5. What are the measurements?

[the Benninger]

I didn't find encapsulated with name VREG3/5 they don't appear in the version of BV I have, I looked for the name LDO in the BV and it appeared I'm almost sure it's not what you're asking for PD: I also leave the BoardView I'm using

[the Benninger]

on SD IO SDO It has a reading of 16.5k hom

on 1.2v LDO AIN has read 2.2k hom to ground