If your sewer camera screen is black or blue, the issue is usually related to power loss, no video signal, bad connections, or a faulty component in the camera system.
In many cases, the monitor itself is not broken. The real problem may come from the camera head, cable, battery, spring connection, soft video cable, or reel components.
This guide focuses only on black screen and blue screen issues, what causes them, and how to fix them.
Table of Contents
1. What a Black or Blue Screen Means
4. Screen Will Not Turn On at All
5. How to Find the Faulty Part
1. What a Black or Blue Screen Means
A black or blue screen usually means one of these things:
- The monitor has power but no video signal
- The camera head is not receiving power
- A cable or connection has failed
- The battery is dead
- A component inside the monitor is faulty
The best solution is to test the system one part at a time.
2. Blue Screen with Power On
If the monitor turns on and shows a blue screen, the screen is working but no video signal is reaching it.
Common causes:
- Faulty camera head
- Loose connector
- Damaged push cable
- Faulty soft video cable
- Bad spring connection
Solutions:
- Tighten all cable and camera connections
- Check for bent pins, dirt, or moisture in connectors
- Replace the camera head if needed
- Replace the soft video cable or push cable
- Test with another compatible component if available
👉 A blue screen usually means signal problem, not monitor failure.
3. Black Screen with Power On
If the monitor powers on but the display stays black, the issue may be a lost signal or internal display problem.
Common causes:
- No video signal
- Loose connection
- Display settings too low
- Internal monitor issue
- Camera side power failure
Solutions:
- Check all external connections first
- Increase brightness or reset display settings
- Test another camera head or cable
- Replace the faulty component
- Service the monitor if everything else tests correctly
👉 Always rule out cable and camera issues before replacing the monitor.
4. Screen Will Not Turn On at All
If there is no screen, no light, and no response, the issue is usually power-related.
Common causes:
- Dead battery
- Faulty charger or AC adapter
- Incorrect fuse installation
- Bad button board
- Faulty motherboard
Solutions:
- Recharge or replace the battery
- Check the fuse placement
- Test with AC power directly from a wall outlet
- Replace the battery or charger
- Send the monitor for repair if power still fails
👉 If the unit works on AC power but not battery power, the battery is likely the issue.
5. How to Find the Faulty Part
The fastest way to identify the problem is to isolate one component at a time.
Test in this order:
- Battery / power source
- Camera head
- Spring connection
- Soft video cable
- Push cable
- Monitor
If you have spare compatible parts, swap one part at a time and test again.
👉 When the image returns, you have found the faulty part.
6. Repair or Replace?
Replace one part if:
- Only one component is failing
- The rest of the system works normally
- Testing confirms the faulty part
Send for repair if:
- You are not sure what failed
- Multiple issues happen at the same time
- Internal electronics may be damaged
👉 Most systems can be repaired by replacing one part instead of the full unit.
Frequently Asked Questions
Why is my sewer camera screen blue?
A blue screen usually means the monitor is on but not receiving a video signal.
Why is my sewer camera screen black but powered on?
This can be caused by no signal, loose connections, display settings, or internal monitor issues.
Is a blue screen a bad monitor?
Usually no. A blue screen often means the monitor is working but no video source is detected.
Can a damaged cable cause a black or blue screen?
Yes. A damaged push cable or soft video cable can interrupt the signal completely.
Should I replace the monitor first?
Not usually. Check the camera head, cables, battery, and connections before replacing the monitor.
What if I do not know which part is bad?
Contact support or send the system for evaluation before purchasing parts.
Related Reading
For more tips and product insights, check out our latest blogs:
How to Fix Common Sewer Camera Problems (Solutions & Replacement Parts Guide)
Why Is My Sewer Camera Not Working?
For questions about Forbest inspection cameras, contact a Representative by calling 1-877-369-1199 or message us by clicking here.