MacBook Pro A2159 boardview for Apple logic board 820-01598, supplied as an 832 KB BRD file. Apple's newer logic boards use five-digit 820- numbers, and the exact code on the board must match because similar models use different boards. Open it in OpenBoardView or FlexBV to find components by designator, follow nets such as PPBUS and the USB-C power path, and locate test points when tracking a short or missing rail. Pair it with the matching schematic for a fuller diagnosis.
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 @boardviews. Enginerys does not host this file.
How to open a .brd file
The most common boardview extension. Several unrelated formats share it, which is why one viewer opens a .brd and another refuses it.