PCB
1. Defects of base material
- Delamination
- Stains on and discolouration of surface
- Blistering
- Haloing
- Weave exposure
- Weave texture
- Foreign inclusions
- Mechanical damage
2. Structural defects
- Defective resist
- Through-holes
- Galvanic structure
- Corrosion
- Tinning
- Ruptured conductor / interrupted electrical connection of internal layers