If your monitor is showing "No Signal," it means the camera is not sending a video feed to the monitor. This is usually caused by a power issue, a loose connection, or incompatible equipment.
Quick Check — Start Here
Is your monitor turning on at all? If the monitor has no power, check the monitor's power connection and fuse before troubleshooting the cameras. A completely blank monitor with no menu or logo is a power issue, not a camera issue.
Is the issue happening on one camera or all cameras?
- One camera not working → likely a camera, cable, or connection issue; start with Step 1
- All cameras not working → likely a monitor, power, or system issue; start with Step 2
Step-by-Step Troubleshooting
Step 1 — One camera not working
Check the cable connection
- Unplug and firmly reconnect the camera cable at both ends — at the camera and at the monitor
- Inspect the connector for:
- Bent or pushed-back pins
- Loose or wobbly fit
- Dirt, corrosion, or moisture
- Inspect the full cable run for damage, pinch points, or sharp bends — pay special attention to door frames, hinges, and anywhere the cable passes through metal
Check camera power
- Confirm the vehicle is in the correct mode — most backup cameras only activate when the vehicle is in reverse
- Confirm the camera's reverse trigger wire is connected to the vehicle's reverse light circuit and receiving 12V when in reverse
- In low light, check whether the camera's IR LEDs activate (faint red glow around the lens) — no IR glow means the camera is not receiving power
Test with a different cable
- Try replacing the camera cable with a known working cable
- Long cable runs are a common failure point — if the cable runs a long distance through the vehicle, this is worth testing first
Check for compatibility issues: Your camera and monitor must use the same signal type. Even if the connector physically fits, mismatched signal types will cause No Signal.
- AHD cameras only work with AHD monitors
- CVBS cameras only work with CVBS monitors
- FHD systems require FHD-compatible equipment
Not sure what type of system you have? Go to: How to Identify Your FedEx Camera System (AHD vs CVBS vs FHD)
Step 2 — All cameras not working
When all cameras stop working at the same time, the issue is usually with the monitor or the system's power supply rather than the cameras themselves.
Check the monitor
- Confirm the monitor is powered on and showing a menu, logo, or input screen
- Confirm the monitor is set to the correct input channel
- Check the monitor's power connection and fuse
- If the monitor is completely unresponsive, the monitor itself may be faulty
Check system power
- Confirm the system's main power connection is secure
- Check the inline fuse in the power harness — replace if blown
- Confirm the ground wire is connected to bare chassis metal, not a painted surface
Use the connection diagrams: The FedEx P&D Connection Diagrams PDF shows the correct wiring layout for your vehicle type. Use it to confirm all connections are correct and identify any mismatched components.
View FedEx / P&D Connection Diagrams (PDF)
Common Causes at a Glance
| Cause | How to Fix |
|---|---|
| Loose or unplugged cable | Reseat connections at both ends |
| Camera not receiving power | Check the reverse trigger wire connection |
| Damaged or too-long cable | Replace the cable, test with a shorter one |
| AHD/CVBS/FHD signal mismatch | Confirm system type and use a compatible camera |
| Monitor is not on the correct input | Press Input/Source and select camera input |
| Monitor power issue | Check the monitor power connection and fuse |
| Faulty camera | Test with a known working camera |
Still not working?
Contact our support team at customerservice@rearviewsafety.com with:
- A photo of your monitor showing the No Signal screen
- A photo of the camera and its connection
- Your vehicle type (sprinter van, step van, box truck, etc.)
- Whether the issue is affecting one camera or all cameras
We'll help you diagnose the issue and confirm the correct solution.
Or contact us by 📞 800-764-1028 💬 Text: 929.668.9530
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