A boardview file is a map of a printed circuit board: where every part sits, which way it faces, where its pins are and which net each pin belongs to. It is not a picture and not a design file, but something in between, made for testing and repair. If a schematic answers "how is this supposed to work?", the boardview answers "where on the board is it?" — and on a laptop motherboard with two thousand parts, that second question takes most of the time.
What is inside a boardview
Boardview formats differ, but almost all of them store the same core data, exported from the board's layout:
- The board outline — the shape of the PCB, including cut-outs and mounting holes.
- Every part — its reference designator (
PU301,PC113), position, rotation, outline and the side of the board it sits on. - Every pin — its position, number and the net it connects to.
- Net names — the same names used in the schematic, such as
+3VALW,EC_ONorPLTRST#. - Test points and vias — in many formats, especially those intended for test fixtures.
Some files add more: part values, part numbers, reference diode-mode readings for each net, or several board layers. What they do not contain is the circuit logic: you see that two pads share a net, not why.
What a boardview does that nothing else does
Finds parts in seconds
Type a designator and the viewer jumps to it, on the correct side. Without a boardview, you would search the silkscreen with a microscope — and many parts on modern boards have no silkscreen label at all because there is no room.
Shows a whole net at once
Click any pin and every other pin on the same net lights up. A rail that spans six schematic pages and fifty capacitors appears as one highlighted set. This is the feature that makes short hunting and signal tracing fast.
Tells you which side a part is on
Laptop boards are populated on both sides. A capacitor drawn next to a regulator in the schematic may sit under the CPU on the bottom of the board. The boardview shows it.
Gives you safe probe points
The viewer shows test points, capacitor ends and resistor pads on any net, so you can choose a large, accessible pad instead of a chip pin.
Boardview versus schematic versus PCB design file
| Schematic | Boardview | PCB design file | |
|---|---|---|---|
| Purpose | Shows the circuit logic | Shows physical locations and nets | Used to manufacture the board |
| Typical format | .BRD, .BDV, .FZ, .CAD, .TVW and others | Native CAD formats (Allegro, PADS, etc.) | |
| Component values | Yes | Sometimes | Yes |
| Part positions | No | Yes | Yes |
| Copper traces | No | Rarely | Yes |
| Viewer needed | Any PDF reader | Boardview software | CAD software |
Copper traces are the notable gap. A boardview shows that two pins share a net but usually not the route of the copper between them. When you need the route — to repair a damaged trace, for example — you work from the net highlighting and from the board itself.
Where boardview files come from
Boardviews are exported from the board layout for manufacturing test equipment and for service centres. They leak through the same channels as schematics and are shared in repair communities. Because they are exported by different tools for different test systems, they come in many formats — see Boardview File Formats Compared: BRD, BDV, FZ, CAD, TVW, ASC for the details of each.
That variety is the main nuisance of boardviews. A file can be perfectly good and still refuse to open in your viewer simply because the viewer does not support that format or variant.
The software you need
You need a viewer that understands the file's format. The two most common choices are:
- OpenBoardView — free and open source, runs on Windows, Linux and macOS, and opens the most common formats. A good first tool; setup is covered in OpenBoardView: Installation and First Steps.
- FlexBV — a commercial viewer that supports more formats and adds features such as linking a boardview to its PDF schematic.
Older Windows-only tools and the viewers bundled with certain test equipment open some formats that neither of the above handles. The comparison is in FlexBV vs OpenBoardView vs Other Viewers: Which to Use.
How a boardview speeds up a typical repair
Take a common case: a laptop with no power and a short on the always-on 3.3 V rail.
- The schematic tells you the rail name and which regulator produces it.
- In the boardview, you highlight the rail. Thirty capacitors and a dozen IC pins light up, spread across both sides of the board.
- The schematic shows that a ferrite bead splits the rail into two branches. The boardview shows where that bead is.
- You lift the bead and measure both sides. The short is on the branch feeding a few peripheral chips.
- The boardview lists the parts on that branch. A thermal camera or the rosin method, guided by those positions, finds the warm capacitor.
Without the boardview, steps 2 to 5 would mean scanning schematic pages and searching the silkscreen for each part. With it, the whole search takes minutes. This combined workflow is described in How to Use a Schematic and a Boardview Together.
Limits and pitfalls
- Revision mismatch. A boardview for another revision of the board will show parts in slightly different positions. Always compare the outline and a few landmarks with your board.
- Missing values. Many boardviews do not include component values. Get them from the schematic.
- Format variants. The same extension can mean different formats.
.BRDin particular covers several unrelated formats. - Mirrored views. The bottom side must be flipped to match the board when you turn it over. Getting this wrong is the most common reason a part "is not where the boardview says".
- Unpopulated parts. Boardviews usually show every footprint, fitted or not. An empty footprint on the board is not necessarily a missing part.
Finding boardviews for your board
Search the catalog by the board code printed on your PCB. Each board page lists available boardview files with their formats, and the boardview section lets you browse by brand. Download the boardview even if you plan to work mostly from the schematic — you will want it the moment you need to find a part.
FAQ
Can I repair a laptop without a boardview?
Yes, many repairers did for years. It is slower: you locate parts from the silkscreen, from landmarks and from the schematic's layout hints. For boards with few silkscreen labels, a boardview saves a lot of time.
Is a boardview the same as a Gerber file?
No. Gerber files describe the copper, solder mask and silkscreen layers for manufacturing. A boardview describes parts, pins and nets for testing. Some tools can build a rough boardview from design files, but the formats serve different purposes.
Why do some boardviews show diode values?
Some service tools record reference diode-mode readings for each net on a known-good board and store them in the file. They are a useful comparison when hunting faults, as long as you remember they were measured on a specific board with a specific meter.
Are boardview files dangerous to open?
They are data files, not programs, but they usually arrive inside archives from third parties. Scan archives before opening them and only run viewer software from its official source.
Bottom line
A boardview turns a part number or net name into a position on the board, shows every part on a net at once and points you to safe probe points. Pair it with the schematic for the same board revision, and most of the searching in board repair disappears.