Fixing “No Signal”, “Video Mode Not Supported”, or Blank Screen on Recorders
Tags: video mode not supported, signal out of range, no signal error, display resolution mismatch, monitor compatibility issue, recorder resolution settings, HDMI connection troubleshooting, VGA connection troubleshooting, input source selection, display input settings, PWR light status, recorder power check, HDMI cable reconnection, VGA cable reconnection, alternative display testing, resolution adjustment, Swann logo display, black screen issue, temporary display usage, resolution configuration
This guide helps you troubleshoot when your Swann DVR or NVR is turned on, but you see nothing on your monitor—no loading screen, a "No Signal" error, or messages like "Video Mode Not Supported."
Before diving in, ensure:
- The recorder is powered on (check the LED indicators).
- Your monitor or TV is working (test it with another device).
- Cables (HDMI/VGA) are securely connected and not damaged.
NOTE: If the recorder doesn’t power on at all, freezes on the loading screen, or keeps restarting, follow this separate boot troubleshooting guide.
Choose Your Issue
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No image at all (screen is blank or says “No Signal”) → Go to Scenario 1
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Recorder shows the logo, then screen goes black or says “Video Mode Not Supported” → Go to Scenario 2
1. No Image or “No Signal” on Screen
Situation: The recorder is powered on (LEDs are lit), but the screen stays black or shows “No Signal.” You don’t even see the Swann logo or loading screen.
Step-by-Step Fix
Check Monitor Input
- Use your monitor’s remote or buttons to cycle through inputs (HDMI 1, HDMI 2, VGA, etc.).
Why this helps: The display might be set to the wrong source.
Reconnect the Display Cable
- Unplug and firmly reconnect the HDMI or VGA cable at both ends.
- Look for signs of wear, bent pins, or damage.
Try a New Cable
- Swap in a different HDMI or VGA cable to rule out a bad cable.
Use a Different Port
- If your recorder has both HDMI and VGA, switch to the other output and test.
Test with a Different Monitor or TV
- Connect your recorder to another screen that supports 1080p.
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Inspect the Recorder’s Video Output
- If nothing works on multiple monitors and cables, the recorder’s video output port may be faulty.
Please contact Swann Support for next steps.
- If nothing works on multiple monitors and cables, the recorder’s video output port may be faulty.
Still blank AND recorder LEDs are off? Check this guide for power or boot issues.
2. Screen Shows “Video Mode Not Supported” or Goes Black After Logo
Situation: You see the Swann logo or loading screen, then the screen goes black or shows an “Out of Range” or “Video Mode Not Supported” error.
Step-by-Step Fix
Cause: Resolution Mismatch
- The recorder is working but outputting a video resolution your monitor can’t display.
Fix: Connect to a Compatible Monitor
- Use a monitor or TV that supports 1080p (some recorders default to 1920x1080).
- This should let you access the recorder’s display menu.
Change the Display Resolution
- Navigate to Main Menu to change the resolution.
- Select a lower resolution (e.g., 1280x720) that works with your main monitor.
You can find step-by-step resolution reset instructions for your specific model in the following articles:
Reconnect to Your Original Monitor
- After applying changes, unplug the temporary monitor and reconnect your original one.
Extra Tips
- Avoid long HDMI cables: Use cables under 12 feet to reduce signal loss.
- Use direct connections: Skip adapters or splitters during testing.
- No image after resolution change? → Try a different monitor again or repeat the resolution reset.
Summary & Next Steps
You’ve now gone through the key fixes for common display problems with your Swann recorder. If:
- The issue is with power, freezing, or booting → Use this guide instead
- The screen is still blank, even with new cables and monitors → Contact Swann Support