Introduction
Modern PCBs often contain:
- 4 layers
- 6 layers
- 8 layers
- HDI structures
Recovering these boards requires advanced analysis.
Why Multilayer Boards Are Challenging
Internal copper layers cannot be directly observed.
Engineers must understand:
- Layer stackup
- Buried connections
- Via structures
- Signal routing
Technologies Used
Professional analysis may include:
- Industrial CT scanning
- X-Ray inspection
- Microscopic inspection
- Electrical testing
Applications
Especially important for:
- High-density boards
- BGA designs
- High-speed communication boards
Conclusion
Complex multilayer PCBs can be recovered with the right equipment and engineering experience.