Dell Precision 3571 no power after USB-C drop, 1 amber 6 white

Do you have any descriptions on the U7201 housing ?

In my opinion, Dell service remains (expensive).
This is a 2022 model, if expensive to repair it is worth considering the option to buy this model (sntyment) after refresh/refurb , sa from 400.$


I found a paid SM (US $25 ) under this model (203117-1)
- they send to email after payment
- type in(google.com) the phrase: Dell Precision 3571 shema, you will quickly find a contact for SM







- this is TPS65994AE (AD)
- there is a video and a circuit from a Lenovo Slim7 14-IAH7 laptop Link

Layout on (ali...) cheap , ... but there may be further damage ?
- you write flashes : 1x orange+ 6x white i.e. damaged kbc MEC5200/ sometimes MEC5107,MEC5107-LJ(-ES)

Quote:

Embedded Controller (EC)

such MEC was in Latitude 5420 (LA-K491P Rev 0.2 )
If this TPS does not have its own eprom, it cooperates with the kbc, i.e. failure of one entails the other (kbc)

The kbc batch is in the main Bios
* From address 1000h the block length 100000h has to be transferred from the org. Bios dump

p.s

It's not TPS as you write , look in Link_ from 11:27 , shown this TPS , then after spilling its pins

You have to fix the boards very expensive, from 580.$ upwards start, depending on whether you have NVidia graphics in the option (which chip and how much VRAM 2/4 GB GDDR6)
* QN20-P1-A1, QN20-P3-A1, QN20-M3-A1, QN20-M3-R-A1, and QN20-P3-R-A1
nVidia T500 mobile Link or A1000 series/NVIDIA T600 series
model specs attached.

Possible ctrl USB_C+PD below



plus is

CCG3PA jw, 24-pin
MCP22350 28-pin
TPS65988 to qfn59

>>21910109
Hello,
Thank you very much for your help and for the boardview link!
After further investigation, we were able to find the block diagram schematic of the Dell Precision 3571 (BROADMOOR15P MLK 203117-1), which clearly shows that the USB-C Power Delivery controller used is the TPS65994AEYGBR from Texas Instruments.
This matches perfectly with your description: it is indeed a 50-pin BGA chip located near the two USB-C connectors on the board.
We have already found the component on AliExpress (TPS65994AE, BGA package) and will bring it to a local technician

for BGA rework (reflow and replacement).
The laptop was dropped directly onto the USB-C charging connector, causing a short circuit that killed this chip (it gets very hot when power is applied).
We will update this thread after the repair to confirm if the TPS65994AE was indeed the only faulty component.
Thank you again for your time and assistance!>>21910109