Troubleshooting Guide: Why Is My Custom Neon LED Sign Not Working?

Troubleshooting Guide: Why Is My Custom Neon LED Sign Not Working?

Troubleshooting Guide: Why Is My Neon LED Sign Not Working?

Introduction: Neon LED signs are more than just sources of illumination; they're beacons of identity and personality for businesses. However, when these signs falter, it can be frustrating. In this comprehensive guide, we'll explore common issues that cause neon LED signs to malfunction and provide practical solutions to get them shining brightly once again.

Main Body:

  1. Power Supply Check: The first step in troubleshooting a non-functioning neon LED sign is to inspect the power supply. Ensure that the power source is adequate and undamaged. Loose connections can disrupt the flow of electricity, causing the sign to flicker or remain dark. If using a transformer, test it to verify that it's supplying the correct voltage to the sign. Inadequate voltage can lead to dimming or inconsistent illumination. Also check if your sign is a 12v or 24v sign as this can have an imact in function of the leds. 

  2. Silicone Tubing Inspection: The silicone tubing in neon LED signs plays a crucial role in diffusing light and protecting the LED bulbs within. Inspect the tubing for any tears, cuts, or damage that could compromise its integrity. Even minor damage can disrupt the flow of light, resulting in uneven illumination or dark spots. If you notice any issues with the tubing, it may need to be repaired or replaced to restore the sign's brightness.


  1. Water Damage Assessment: Water damage is a common culprit behind malfunctioning neon LED signs. Even small amounts of moisture can corrode connections and damage components, leading to electrical issues. Inspect the sign thoroughly for signs of water ingress, such as rust, corrosion, or discoloration. Pay particular attention to areas where water may collect, such as around the power supply or along the edges of the sign. If water damage is detected, take steps to dry out the sign and address any underlying issues to prevent future problems.

  2. Troubleshooting LED Bulbs: While LED bulbs are known for their durability, they can still fail over time. If your neon LED sign is not lighting up or if certain sections are dimmer than others, it may indicate a problem with the LED bulbs. Carefully inspect the sign for any burned-out bulbs or damaged LED strips. Replace any faulty bulbs or strips to restore uniform illumination across the sign.


Newcastle United printed Custom neon example 

  1. Professional Repair Services: If DIY troubleshooting fails to resolve the issue or if you're unsure how to proceed, it may be time to seek professional repair services. Not only do we make neon signs but Our dedicated sign maker workshop specializes in repairing neon LED signs, from power supply issues to damaged tubing and beyond. Our skilled technicians have the expertise and equipment to diagnose and fix a wide range of problems, ensuring that your sign is restored to its former glory. If you need replacements parts, leds, tubing or if there is a crack in yoru acrylics we can help. just drop us a message or call us to arrange a viewing- send us your sign and we can diagnose and cost out the repair work. 

Conclusion: A non-functioning neon LED sign can detract from your business's visibility and impact. By following the troubleshooting tips outlined in this guide and seeking professional assistance when needed, you can ensure that your sign continues to shine bright. Have questions or need further assistance? Feel free to reach out to us, and our team will be happy to help or take a look at our Custom Neon signs where you can make and see your own design come to life. 

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