Selti Elettronica SLK/750012502 is a controller board used in Selti arcade and industrial display units, typically driving an LCD or CRT panel via a video interface and power regulation circuitry. Common failures on this board include degraded electrolytic capacitors on the main supply rails, burnt-out backlight driver ICs, shorted gate drivers for the monitor’s LED matrix, and broken trace connections from the video input to the display driver. Initial diagnostics should verify that the 12 V/24 V power supplies are within spec, inspect the board for bulging or leaking capacitors, and check the LCD backlight current with a multimeter; if those pass, review any error codes on the monitor’s diagnostic LED or serial log for video interface faults.[oss-gpt-20b]