Nb8511-pcb-mb-v4 Boardview ((top)) -

“ECN #442: Due to EMI issue on v3, inner2 ground plane has a cutout under U5. For v4, removed cutout. Ground and power planes now overlap in region D-17. Ensure sufficient dielectric. — L.C.”

“Or,” Maya said, a new thought crystallizing, “the boardview is right, and we’re misreading the layer stack-up.” nb8511-pcb-mb-v4 boardview

Dev looked at Maya. “You just diagnosed a short that didn’t exist in any netlist, any schematic, any continuity test. You diagnosed a ghost .” “ECN #442: Due to EMI issue on v3,

Dev zoomed into C442. “Here. The little bastard. The boardview says its positive terminal is net ‘+3V3_MEM,’ and its negative is ‘GND_REF.’ That’s fine. But when I meter it, there’s zero ohms between those nets. So either the boardview is wrong, or the physical board has a solder bridge somewhere.” Ensure sufficient dielectric