If your marine radar is not working, it can be frustrating, but there are several common issues that might be causing the problem. The most common issues include power supply failures, antenna cable problems, or incorrect radar settings. Checking the power connections, ensuring the antenna is securely connected, and confirming that the radar is calibrated properly are essential first steps. If the problem persists, it may be necessary to consult a professional technician to diagnose and repair the system, ensuring it’s operational for safe navigation.