The Daktronics P‑1033‑100 (0A‑1033‑0101) is a scoreboard driver that receives control signals and powers the display columns of an indoor incandescent scoreboard. Common failures include a rapidly clicking relay caused by input voltage exceeding 14 VDC, a burned or tripped internal fuse, or a defective relay contact; these symptoms often indicate overvoltage on the signal line or a shorted output stage. First‑check steps: verify that the controller’s output voltage is within spec (≤14 VDC), inspect the driver for visible burn marks or loose solder joints, and test the relay contacts with a multimeter to confirm continuity; if the relay fails, replace it before proceeding to power‑supply diagnostics.[oss-gpt-20b]