» This's about use of a product early in its life cycle, intended to improve user satisfaction; for "burn-in" that damages display hardware, see Phosphor burn-in.Burn-in's the process by which components of a system are exercised prior to being placed in service (and often, prior to the system being completely assembled from those components). The intention's to detect those particular components that'd fail as a result of the initial, high-failure rate portion of the bathtub curve of component… (More on Burn-in)