Boardview
Digital schematic and layout reference file

What it is

Boardview is a proprietary file format that combines the schematic topology, PCB layout, component placement, and test-point mapping of a circuit board in a single interactive document. The most common format is .brd or .bv, viewed with software like Boardview or Altium's free viewer. In repair work, Boardview is the definitive tool for translating abstract schematic connections into physical board locations.

Unlike a raw schematic (which shows logic flow) or a physical board photo, Boardview overlays both the component references and their electrical relationships onto a scaled, navigable image of the PCB. You can click a component (e.g., U1200, a VRM) and immediately see which test points, vias, and traces connect to it, their resistance-to-ground values, and their typical operating voltages under different power states.

A complete Boardview file includes layer information, net names (e.g., PPBUS_G3H, PP3V3_S5), resistance-to-ground baselines, and often embedded test point coordinates in microns. Without it, you are diagnosing a board blind.

In practice

You receive a dead MacBook or laptop board. Power-on fails—no fans, no boot, no response. You probe PPBUS on the main rail and measure 0.2V instead of 8.5V. Now you need to know: which VRM supplies this rail? Where are the filter capacitors? Which PWM controller governs the buck converter?

Open Boardview. Search for PPBUS net. The schematic tree expands, showing you all connected nodes. Click the VRM IC (ISL9239 or NCP81239). Its location on the PCB board lights up. Now zoom to its input and output filter caps—Boardview shows you exactly which C1201, C1202 etc. are in the power tree. Hover over a capacitor symbol; the tool displays its REFERENCE DESIGNATOR, value (e.g., 100µF), and likely footprint (1210, 1206).

Now probe the gate drive of the top MOSFET (Q1200). Boardview shows the trace path to the PWM controller output. If you measure no switching signal, you've narrowed fault isolation to a driver IC or gate resistor without ever touching a multimeter blindly.

In field diagnosis, Boardview accelerates Resistance to GND benchmarking. A technician can compare their measured value at a test point directly against the baseline stored in Boardview's metadata. If TP_PPBUS_A should be 8.5V ±0.3V in S0 but you read 0.0V, you know immediately that the rail is shorted or the supply is dead—and Boardview tells you exactly which components feed that node.

Typical Diagnostic Workflow with Boardview

1. Power-on test: Measure primary rail (e.g., PPBUS_G3H) at known test point. If low, note the voltage.
2. Open Boardview: Search net name in schematic tree.
3. Identify supply chain: Click VRM IC to locate it physically on the board.
4. Check input filtering: Navigate to upstream capacitors and inductors. Measure for cold solder joints or pad lifting.
5. Verify switching signal: Use Boardview to find the gate drive trace. Probe with oscilloscope for 0–5V clock.
6. Check output filtering: Navigate to post-VRM filter stage. Measure ESR and ripple voltage.
7. Isolation via Boardview metadata: If fault persists, use the file's resistance-to-ground baseline. Compare your multimeter reading to expected value to determine if the problem is a short (near zero) or open (infinite).

See also

Related terms in this glossary:

• Resistance to GND — Baseline and fault detection
• Pad Lifting — PCB pad damage and recovery