Commax Dp-ra01 Installation Manual Jun 2026

| Symptom | Probable Cause | Solution | | :--- | :--- | :--- | | | Loose connection on 'V' or 'G' terminal. | Check terminal tightness and polarity. | | No Audio / One-way Audio | Loose connection on 'A' terminal. | Re-strip wire and reconnect Audio terminal. | | No Power / LED off | Short circuit or distance too long. | Check for wire shorts; ensure cable length is within limits (typically max 30m-50m depending on cable gauge). | | Noisy Video / Rolling Lines | Ground loop or interference. | Use shielded cable and ensure the shield is grounded at the monitor side only. | | Water ingress | Damaged grommet or seal. | Check rubber seals and ensure cables enter from the bottom knockout hole. |