The Data‑Ray DR5614 (P/N 800291‑001) is a 14″ color CRT monitor used as the display/control unit on Mazak/Mazatrol and Mitsubishi CNC systems. Common failure points for this class of industrial CRT monitors include phosphor degradation, cathode ray tube burn‑in, power supply board failures (especially the high‑voltage transformer), and degraded or broken backlight/driver circuits; these often present as flickering, washed‑out colors, or complete loss of image. First‑check diagnostics should verify that the monitor’s 12 V DC input is present and stable, inspect the CRT power supply for correct ripple and transformer output, and confirm that the display driver board shows no obvious burn marks or blown fuses before proceeding to a visual inspection of the CRT glass and backlight assembly.[oss-gpt-20b]