issued by Underwriters Laboratories. It indicates that the PCB material is flame-retardant and will self-extinguish within 10 seconds during a vertical burn test. : This is a UL File Number
– Using this string as a case study to show how to cross-reference UL file numbers, flammability ratings, and manufacturer codes against official PDF certificates.
These are delicate PCBs; static electricity can damage them during installation.
Repair forums and service manuals often contain photos or schematics of genuine T‑Con boards for specific TV models. Compare the component layout, connectors, and IC part numbers with a known‑good example. The board should be an exact physical match to the one originally fitted in the TV.