Signage & LED Strip Lighting Factory Since 2011

Signage & LED Strip Lighting Factory Since 2011

Why is my LED strip not working after I cut it

It’s quite common that LED strips stops working after being cut, especially for those people who dose not have much experience on DIY. On the condition that the strips do work before cutting, here are the potential causes and solutions.

Parts of LED strip is not working

1. Incorrect cutting point

Cause: Flexible LED strips is cuttable, usually the cutting points is marked by a line or a scissor icon. Cutting the strip at any point other than the designed points can break the circuit, which causes this unit of the strip not working.

Solution: Cut off this damaged unit at correct cutting point, expand another unit on strip by soldering or solderless connectors if needed.

Incorrect cutting point

2. Electrostatic damage

Cause: Static electricity creates high-voltage spike which easily breakdown LED chip’s P-N junction, it happens by touching soldering pad or LED chips directly.

Solution: Put on anti-static wrist strap before cutting, other static elimination works as well.

Electrostatic damage

3. Connection issue

Cause: When connect two strips together after cutting, faulty soldering or bad connection by solderless connectors leads to the following strips not working.

Solution: Inspect the solder joints, re-solder the weak joints; Replace connectors, ensure it fits well and tight.

Connection issue

Entire LED strip is not working

1. Short circuit

Cause: Forget to turn off the power while cutting the strips or solder positive and negative polarity together accidentally, this short circuit creates surge current which burns LED chips;

Solution: Disconnect strips to LED driver before cutting; Check if there is any soldered joints problem.

Short circuit

2. Polarity Reversal

Cause: a. Reversing the polarity when connect strips to LED driver.

   b. Reversing the polarity when solder cable or use solderless connectors. Such as “+” and “-” mixed or “R”, “G”, ”B” and “+” mixed.

Solution: Double check polarity of cable and soldering joints before power on.

Polarity reversal to power supply
Reversed polarity of cable soldering 2

3. Connection issue

Cause: Cable is not soldered to strips well or connectors does not fit strips well may cause incomplete electric circuit

Solution: Make sure the connectors or soldered joints are properly aligned and securely attached to the copper pads. If using snap or solderless connectors, ensure they are compatible with the strip’s width and pin configuration.

4. Power supply issue

Cause: After cutting and reconnecting LED strips, the power supply might not provide adequate voltage or current, especially if the strip length has changed significantly.

Solution: Calculate how much power the new strip need, change power supply if the old one is not powerful enough.

Additional tips:

1. Disconnect power supply before cutting and reconnecting.

2. Check all the solder joints and other connections before power on.

3. Prepare some equipment, anti-static wrist strap for static elimination, multimeter for measuring voltage and current, checking if the solder joints is shorted.

4. Contact us for help.

Outdoor LED Neon in Landscape Lighting - Popular Colors and Control OptionsOutdoor LED Neon in Landscape Lighting - Popular Colors and Control Options
Outdoor LED Neon Flex Mounting Solutions for Architects and Installers
LED Neon Flex lighting has quickly become a go-to solution for outdoor signage, architectural accents, and creative installations. With its flexibility, durability, and bright, uniform glow, it’s ideal for both commercial and decorative use. But one crucial detail often gets overlooked: selecting the right mounting accessories. Choosing proper mounting clips or...
What is a waterproof IP rating-01What is a waterproof IP rating-01
LED Strip Lights Waterproof IP Rating Guide
Understanding waterproof IP ratings is critical when choosing LED strip lights for your lighting project. These ratings determine how well a product protects against solids and liquids and affect its suitability for use in different environments. One thing to consider when purchasing LED strips is whether or not they are...
LED-strip-controllerLED-strip-controller
How to choose LED strip controller
When selecting LED controller for strip, several factors should be took into consideration to ensure it matches strips and meets specified application requirements. Here are some key points: I. LED strip type and Specifications 1. Voltage and Current: First of all, be sure of operating voltage (such as 12V, 24V, etc.) and...
Examining-3000K-vs-4000K-LED-Lighting-Options-for-Interior-DesignExamining-3000K-vs-4000K-LED-Lighting-Options-for-Interior-Design
Examining 3000K vs 4000K LED Lighting Options for Interior Design
Selecting between the 3000K and 4000K alternatives for LED lighting for your house might be challenging. When choosing the best lights for your needs, it's critical to understand how they differ despite the fact that both offer excellent illumination and energy savings. We examine the advantages of every kind of...
Silicone LED Neon Flex Applications
Due to its adaptability, toughness, and energy economy, silicone LED neon flex has become a popular flexible lighting option in recent years. Numerous uses for this kind of lighting exist, including ornamental, commercial, and residential illumination. Applications We shall examine some of the Silicone LED Neon Flex's most well-liked uses in this...
How-to-solve-the-problem-of-LED-neon-stripsHow-to-solve-the-problem-of-LED-neon-strips
How to solve the problem of LED neon strips?
With the development of science and technology, the development of lighting technology has also sprung up in recent years. A variety of high-quality, cheap and practical lighting products have entered our lives. LED neon strips play an important role in lighting products. Their beautiful lines and the flashing pictures make...

Share:

Facebook
Twitter
Pinterest
LinkedIn
Subscribe
Notify of
guest
0 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments

Search SignliteLED Blog

Categories

To top

Get a Quote Now