Hantarex 02191291 monitor

Hantarex 02191291 is a 20‑inch “Polo” CRT monitor that uses an internal switching‑regulator power supply and a single 12‑pin connector for video input. Common failure modes include blown capacitors or the regulator on the main board, tube degradation (especially the 6C40/6B10), and loose or corroded video connector pins. First‑check diagnostics: verify mains voltage and monitor power‑on LED; inspect the power supply board for bulging electrolytics or burn marks; test the CRT tube with a multimeter for correct high‑voltage bias and screen glow; and check all 12‑pin connectors for continuity and proper seating.[oss-gpt-20b]

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