Case 270 ยท Public preview
Serial Slicing Can Trace Electrical Damage Through a Potted Module
Multiple channels in potted power-converter modules were electrically damaged, including shutdown inputs and power outputs.
Electrical probingX-ray reviewSerial diamond-saw sectioningOptical microscopySEMDamage-path reconstruction
What the evidence preview establishes
A voltage transient on the shutdown-control signal was the most likely initiating event. The internal damage trail included a fused PWB trace, damage to control circuitry, and emitter-collector shorting of power FETs.
Why this case matters
When a potted module cannot be excavated conventionally, serial slicing can preserve and reconstruct its damage trail. Follow fused conductors across planes to distinguish electrical initiation from secondary thermal destruction.
Full evidence reserved for MEMBER and STOREThe complete case includes the evidence sequence, four interpreted figures, alternative explanations, limitations, and practical application guidance.