This refers to the specific revision or material type of the PCB.
Once you have secured the exclusive file, you need the right tools. The two most common viewers for .brd files are (freeware) and OpenBoardView (open source, preferred for modern machines).
HannStar boards are robust, but they frequently present a predictable set of hardware failures due to aging and thermal stress. When troubleshooting these boards, look out for: 1. No Power / Complete Dead Board