An updated overview of computer monitors: how displays are classified, the key specs to compare (resolution, refresh rate, panel type), modern technologies (LCD with LED backlights, Mini-LED, OLED), and practical buying guidance.
CRT HDTVs used cathode ray tubes to display high-definition signals (commonly 720p and 1080i). Once a competitive, lower-cost alternative to early plasma and LCDs, CRT HDTVs declined as flat panels became thinner, larger, and more energy efficient. Today CRTs survive mainly in retro-gaming and niche professional uses.
A practical, safety-first guide to diagnosing and repairing modern flat-panel and smart TVs. Start with simple power and software checks, inspect the SMPS and boards, and know when to call a professional.