Accidentally knocking the clock off a nightstand or applying too much pressure while cleaning can fracture the delicate internal layers.
Over time, the materials in cheaper or older LCD screens can degrade, making them more prone to failure under normal use. Identifying the Severity: Is it Fixable? desktop digital clock cracked
If you see black spots , colored lines , or "missing segments" (incomplete numbers), the internal liquid crystal has likely leaked or the ribbon cable has been disrupted. Accidentally knocking the clock off a nightstand or