Tatung 6693006610 (PWB‑0656‑03) is a power supply module used in a range of industrial TV and control panel applications. Common failure points for this model include degraded output capacitors, burnt rectifier diodes, and overheating due to poor ventilation or over‑current conditions; the board often shows signs of thermal stress such as scorch marks or cracked solder joints. Begin diagnostics by verifying input voltage integrity and checking the supply’s output rails against spec with a multimeter; inspect for visible component damage and confirm that the heat sink is properly mounted and free of dust. If the outputs are correct, test the control logic pins for proper signaling and review any error codes logged by the host system.[oss-gpt-20b]