Electronics
Thermal camera for PCB troubleshooting
Focus, macro distance and safe power-up techniques for finding hot components.
Short answer
For electronics, focus distance matters as much as headline resolution. A macro lens or close-focus design can reveal a component that a higher-resolution building camera leaves blurred.
A practical workflow
- Use current-limited power and an appropriate macro working distance.
- Capture a cold baseline, then observe warm-up over time.
- Keep the board stable and record load conditions.
Common mistakes
- Using unrestricted power on a faulted board
- Confusing reflected heat with component temperature
- Relying on digital zoom instead of optical focus
Choosing a camera for this job
Start with native IR resolution, thermal sensitivity, field of view and focus. Close electronics work often needs macro or manual focus; broad building scans benefit from a useful field of view and enough native pixels to resolve an anomaly from a safe distance. Compatibility and reporting workflow matter as much as the headline detector specification.
Compare the exact models in our catalogue →Reviewed August 2026 · Educational information, not a substitute for qualified electrical, mechanical or structural advice.