Schematic in PDF form for board 17948-1, a number following the Wistron pattern of a numeric project code with a dash revision suffix, used on many Dell notebooks. The name gives no model, so identify the laptop from the PCB. At about 10.6 MB the document should cover the full board, letting you trace power rails, check the charging and VRM circuits and find the source of a short. Open it in any PDF viewer and confirm the board number printed on the PCB matches before using the values.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @bartonarquivos. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.