Re: XPS 13 7390 2-in-1. No Power On.

Using Boardview I've managed to peek under the shield.

As expected, that's where a lot of USB power components are. The shield is apparently to dissuade probing of the area.

The big square in the upper-left is called a "BURNSIDE-BRIDGE_BGA_105P-T" and when I Google that I find it's one of two [URL="https://ark.intel.com/content/www/us/en/ark/products/codename/191818/products-formerly-burnside-bridge.html"]intel USB/Thunderbolt components[/URL].

There are other diodes and chips and...

Re: XPS 13 7390 2-in-1. No Power On.



The shield itself is what's getting hot so I believe the component is under the shield.

Here are two closeup shots of the right side of the motherboard. The part outlined in red gets hottest, though mostly near bottom-center of the square I drew.

I'm currently investigating the power distribution and power-on functions to try to identify what that might be before removing it. While I can't find mention of S4 as an independent component, it's listed as a a part of the power-on protocol several tim...

Re: XPS 13 7390 2-in-1. No Power On.



Upon further inspection, the shield around X is soldered, however the top portion of the shield has come loose-- right next to where it gets so hot. It may have gotten hot enough to melt solder when I plugged it in to charge last week....

Re: XPS 13 7390 2-in-1. No Power On.



Thanks very much much, I will do this next. I was comparing the info on the PCB (there's a D462 next to the shield) with the [URL="https://www.badcaps.net/forum/showthread.php?t=106805"]schematics[/URL] and that component seems to be listed as:

LMBR4010H3T5G DFN-1608

I confess I'm a bit rusty on my electronic component diagrams, but the datasheet seems to suggest that's a Schottky Barrier Rectifier and the page it's on in the schematics is for P044 - TYPE-C Port R_PD.

I suspect...

Re: XPS 13 7390 2-in-1. No Power On.



Searched by PCB No and found the schematics.

Still appreciate any suggestions as I move forward. Will update with what I find though....

Re: Dell XPS 13 7390 (2-in-1 Variant) Schematic/BoardView

Tried searching a by PCB number and found another thread with these files. Sorry for the double post.

[url]https://www.badcaps.net/forum/showthread.php?t=106805[/url]Re: Dell XPS 13 7390 (2-in-1 Variant...t=106805[/url]

I've got a XPS 13 7390 (2-in-1 variant) that I've used every day without issue for 2.5 to 3 years now. Specs and failure info are below. This model has an SSD that's soldered to the board with some very important information on it that I need back. I have a bit of experience in electronics repair from years ago (my dad was one of the first-gen computer repairmen, but most of my knowledge is from desktop motherboards with interchangeable components-- not netbooks with microsoldering. Pointers would be very much appreciated.

It should go without saying that I did only cursory research...

Dell XPS 13 7390 (2-in-1 Variant) Schematic/BoardView

Hi all,

VERY new to this. Wondering if anyone has a schematic to a Dell XPS 13 7390. Looking specifically for the 2-in-1 version-- apparently even though it shares the same name/model number at Dell, the XPS 13 and XPS 13 2-in-1 are totally different computers (with totally different boards).

On some shady sites, I've seen the following info on it.

Manufacturer: Compal
Model: Centenario (DDP31)
PCB: LA-G172P

Any help is appreciated.

Re: New Members - please post your introductions here

Great to join the forum. I was pointed to this site as a resource for fixing a broken Dell I have that, because of important information, I can't just pitch.

Seeing the knowledge of folks around here, I'm hopeful for good things!