PCB Stack-Up for LED Cabinets: Layer Count, Copper Weight, Finish, and Impedance

This guide explains what "PCB stack-up" means for LED-display cabinets, why some walls develop intermittent faults in year 3–5, which stack-up grades are appropriate for different use cases, and the exact specification language to put into a tender. What "Stack-Up" Describes An LED-cabinet PCB is a laminated stack of copper and fiberglass layers. The stack-up specifies the fabrication choices that control signal integrity, mechanical durability and solderability: Layer count — number of copper l