Sewer cameras are essential diagnostic tools for plumbers, contractors, and maintenance professionals. These pipeline inspection cameras provide real-time visual access to the inside of pipes, making it much easier to locate blockages, cracks, root intrusions, or other hidden issues. However, while most users focus on the sewer camera head, the screen of a sewer line camera is just as critical. When the display malfunctions or behaves abnormally, it can halt the inspection process and lead to costly downtime and frustration.

In this blog, we’ll explore five common screen-related issues encountered in sewer cameras, including cracked screens, blue screens, black screens, distorted displays with lines, and a moisture picture on the screen. We’ll also discuss their likely causes and provide troubleshooting advice to help you get back to work quickly and efficiently.

1.  Cracked Screen on Sewer Camera Monitor

A cracked screen is one of the most obvious and physically visible problems. It usually results from:

•  Dropping the sewer inspection system
•  Accidental pressure during transport or handling
•  Improper storage in extreme environments

Symptoms:

•  Visible cracks or spider-web patterns on the display
•  Unresponsive touchscreen (for touchscreen models)
•  Partial or complete screen blackout

✅Solutions:

•  Unfortunately, a cracked screen typically requires a full screen replacement.
•  Always use protective cases and screen covers during transport and operation.
•  Store the plumbing camera in a padded, hard-shell carrying case.

2.  Blue Screen or "No Signal" on Plumbing Camera Display

A blue screen or a no signal warning on the sewer camera monitor can indicate a serious communication failure between components.

Possible Causes:

•  Loose or damaged cable connections between the screen and camera head
•  Sewer camera head malfunction
•  Coil cable damage on the drain camera
•  Faulty or unresponsive meter counter
•  Invisible internal circuit issues on the pipeline inspection camera system

✅Solutions:

• Please refer to this blog about blue and no signal issues.

3. Black Screen on Drain Camera Display

A black screen is a common problem, often indicating power-related issues in the plumbing camera system.

Likely Causes:

•  Battery voltage is too low — often below 10.6V
•  A faulty power switch on the sewer inspection camera
•  Damaged charger or dead battery
•  Internal short-circuit or burnt-out display components in the drain camera

✅Solutions:

•  Please refer to this blog about the black screen issues.

4.  Screen with Stripes or Distorted Display on Pipeline Inspection Camera

Symptoms:

•  Color bleeding or discoloration
•  Horizontal or vertical stripes on the screen
•  Lagging or intermittent image tearing

Causes:

•  Using the sewer camera while charging
•  Electrical interference from nearby appliances or tools
•  Short-circuits due to moisture or metal particles on the coil PCB(Coil circuit board)
•  Damaged transmission cable or camera head
•  There is an incompatibility between the sewer camera system and the camera head version

✅Solutions:

• Avoid using the drain camera while charging, especially in high-interference environments.
• Inspect and clean the camera head and coil PCB(Coil circuit board) components using appropriate electronic cleaning solutions.
• If the sewer coil or internal wiring is damaged, replacement may be necessary.
• Avoid using the device near strong magnetic or electromagnetic sources.
• Replace the camera head or keyboard circuit board of the corresponding version.

5.  Moisture or Water Droplets Inside the Screen/There are Water Drops on the Screen Picture

Water intrusion is a serious concern for any electronic device used in wet environments like sewer inspections. Despite waterproof ratings, prolonged exposure or accidental submersion can lead to:

• Condensation inside the screen
• Leaky seals or damaged casing
• There is no water on the screen, but there is water or foggy on the image

Symptoms:

There is no water on the screen, but there is water or foggy on the image（This is the most common reason because the camera head has been entered in water.）

• Visible water droplets behind the screen glass
• Foggy display
• Intermittent display glitches

✅Solutions:

• Immediately stop using the device to prevent further damage.
• Place the device in a drying chamber or desiccant environment (like a sealed box with silica gel or moisture absorbers).
• Do not apply heat directly — this can damage internal components.
•  If the issue persists, seek professional repair to reseal or replace the screen or camera head.
• Regularly inspect and maintain waterproof seals and casing.

Final Thoughts

A sewer camera is an investment in both time and money, and its screen is a vital interface between what’s happening underground and the technician above ground. By understanding common screen issues such as cracking, blackouts, distortion, and moisture problems, plumbing professionals can better prepare for emergencies and keep their equipment in peak condition.

Remember, always:

• When using a sewer camera, please put a waterproof o-ring on the camera head(usually it is already wearing the waterproof o-ring)
•  Handle the display with care.
•  Avoid electrical interference during operation.
•  Keep your plumbing camera clean and dry.
•  Perform routine inspections of cables and connections.

Whether you’re inspecting storm drains, waste lines, or complex pipeline systems, a clear and functional screen ensures your sewer camera provides the accuracy and detail needed to do the job right.