{"id":245,"date":"2026-06-12T10:12:49","date_gmt":"2026-06-12T10:12:49","guid":{"rendered":"http:\/\/localhost:8000\/?post_type=news&#038;p=245"},"modified":"2026-10-07T05:57:46","modified_gmt":"2026-10-07T05:57:46","slug":"bathroom-waterproof-led-strip-ip67-mirror-led-lights-4","status":"publish","type":"news","link":"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/","title":{"rendered":"What should be done when the SPI light strip is not functioning properly?"},"content":{"rendered":"<p>LED light strips, with their flexible installation methods and rich lighting effects, are widely used in various scenarios such as commercial lighting, home decoration, and small store decoration. Among them, <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/spi\/\" target=\"_blank\" rel=\"noopener\">SPI light strips<\/a> (such as WS2811, WS2812B, WS2815, UCS1903 models) with pixel-level control advantages have become the preferred choice for personalized decoration. However, in actual use, many users encounter problems with SPI light strips not being controlled \u2013 such as erratic light flickering, color deviations, inability to respond to controller instructions, and failure of local light strips. This not only affects the user experience but also may delay the decoration progress.<br \/>\nWhen many users encounter such problems, they tend to fall into the trap of \u201cblindly replacing the light strips and controllers\u201d, which not only increases costs but also fails to solve the problems accurately. In fact, the uncontrollable issue of SPI light strips mainly lies in the four major aspects of \u201cwiring, equipment matching, signal interference, and parameter setting\u201d. As long as one follows the logic of \u201cfirst identifying the phenomenon, then locating the cause, and finally solving it precisely\u201d, it is possible to efficiently troubleshoot. Most of the problems can be handled without professional skills and by oneself. This article will detail the troubleshooting steps, common causes, and solutions for the uncontrollable issue of SPI light strips, along with a clear outline, to help you quickly solve various control problems.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#1_First_clarify_the_core_The_uncontrolled_core_feature_of_the_SPI_light_strip\" >1. First, clarify the core: The uncontrolled core feature of the SPI light strip<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#11_Uncontrolled_core_performance_quickly_distinguishing_%E2%80%9Cfaults%E2%80%9D_from_%E2%80%9Coperator_errors%E2%80%9D\" >1.1 Uncontrolled core performance (quickly distinguishing \u201cfaults\u201d from \u201coperator errors\u201d)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#12_Core_Characteristics_of_SPI_Light_Strip_Accurately_Identifying_the_Root_Cause_of_Faults\" >1.2 Core Characteristics of SPI Light Strip (Accurately Identifying the Root Cause of Faults)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#II_General_Troubleshooting_Steps_for_SPI_Light_Strips\" >II. General Troubleshooting Steps for SPI Light Strips<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#21_Step_1_Power-off_inspection_to_identify_and_resolve_basic_power_supply_issues\" >2.1 Step 1: Power-off inspection, to identify and resolve basic power supply issues<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#22_Step_2_Check_the_wiring_and_eliminate_the_core_issue_of_%E2%80%9Cwiring_error%E2%80%9D\" >2.2 Step 2: Check the wiring and eliminate the core issue of \u201cwiring error\u201d<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#23_Step_3_Check_the_controller_and_confirm_that_%E2%80%9Cinstruction_transmission%E2%80%9D_is_normal\" >2.3 Step 3: Check the controller and confirm that \u201cinstruction transmission\u201d is normal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#24_Step_4_Identify_and_eliminate_signal_interference_and_resolve_the_%E2%80%9Cunstable%E2%80%9D_issue\" >2.4 Step 4: Identify and eliminate signal interference, and resolve the \u201cunstable\u201d issue<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#25_Step_5_Segment_testing_identify_%E2%80%9Clocal_fault%E2%80%9D_points\" >2.5 Step 5: Segment testing, identify \u201clocal fault\u201d points<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#III_Special_Fault_Diagnosis_for_SPI_Light_Strip\" >III. Special Fault Diagnosis for SPI Light Strip<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#31_Common_Specific_Faults_and_Solutions\" >3.1 Common Specific Faults and Solutions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/www.mingxuelighting.com\/ja\/news\/bathroom-waterproof-led-strip-ip67-mirror-led-lights-4\/#32_Precautions_for_Checking_SPI_Light_Strip\" >3.2 Precautions for Checking SPI Light Strip<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"1_First_clarify_the_core_The_uncontrolled_core_feature_of_the_SPI_light_strip\"><\/span>1. First, clarify the core: The uncontrolled core feature of the <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/spi\/\" target=\"_blank\" rel=\"noopener\">SPI light strip<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"11_Uncontrolled_core_performance_quickly_distinguishing_%E2%80%9Cfaults%E2%80%9D_from_%E2%80%9Coperator_errors%E2%80%9D\"><\/span>1.1 Uncontrolled core performance (quickly distinguishing \u201cfaults\u201d from \u201coperator errors\u201d)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u25cfCore performance issues: Fluctuating lights, disordered colors, inability to switch pixel-level effects (such as flowing or chasing), no response from local\/overall light strips, abnormal brightness (either too bright or too dim)<br \/>\n\u25cfPrecautions for inspection: First, perform power-off operation to avoid the risk of electric shock. At the same time, confirm that the equipment (light strips, controller, power supply) is powered on normally, and rule out basic errors such as \u201cnot powered on\u201d or \u201cloose plug\u201d.<br \/>\n\u25cfThe main causes: unstable power supply, incorrect wiring, signal interference, insufficient device compatibility, and damaged IC chips. These five factors account for over 95% of the total.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"12_Core_Characteristics_of_SPI_Light_Strip_Accurately_Identifying_the_Root_Cause_of_Faults\"><\/span>1.2 Core Characteristics of SPI Light Strip (Accurately Identifying the Root Cause of Faults)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u25cfControl features: Focuses on pixel-level control, enabling independent control of individual light bulbs, suitable for personalized decoration scenarios (such as homes, small stores, and popular spots,etc.)<br \/>\n\u25cfTransmission characteristics: The signal is transmitted in a \u201csingle-line series\u201d manner, which is susceptible to the wiring direction and transmission distance. This is one of the main reasons why the <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/\" target=\"_blank\" rel=\"noopener\">SPI light strips are uncontrollable<\/a>.<br \/>\n\u25cfCommon model differences: In 3-wire system (WS2811, WS2812B), there is no continuous transmission function upon interruption. Damage to a single LED or a certain section may cause the subsequent light strip to lose control; In 4-wire system (WS2815), it has the continuous transmission function upon interruption, which can effectively avoid such problems.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-1013\" title=\"2\" src=\"https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/2-5.png\" alt=\"2\" width=\"592\" height=\"332\" srcset=\"https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/2-5.png 592w, https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/2-5-300x168.png 300w, https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/2-5-18x10.png 18w\" sizes=\"(max-width: 592px) 100vw, 592px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"II_General_Troubleshooting_Steps_for_SPI_Light_Strips\"><\/span>II. General Troubleshooting Steps for SPI Light Strips<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>No matter what kind of abnormal situation occurs with the SPI light strip, first follow the following general steps to troubleshoot. This can quickly resolve 80% of the basic problems, avoiding the need for random disassembly and replacement of equipment, and saving time and costs.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"21_Step_1_Power-off_inspection_to_identify_and_resolve_basic_power_supply_issues\"><\/span>2.1 Step 1: Power-off inspection, to identify and resolve basic power supply issues<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u25cf- Check the power adapter: Ensure that the power specification matches the SPI light strip (most SPI light strips are 12V, while some high-power models are 24V). Avoid using a \u201clow-power power supply for a high-power light strip\u201d which may result in insufficient power supply. Use a multimeter to measure the output voltage of the power supply. If the voltage fluctuates greatly or there is no output, it indicates that the power supply is damaged and a power supply of the same specification needs to be replaced (the power supply\u2019s power should be 20% higher than the total power of the <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/products\/\" target=\"_blank\" rel=\"noopener\">light strip<\/a> and leave some redundancy).<br \/>\n\u25cf- Check the power connection: Ensure that the positive and negative terminals (V+ and GND) of the power supply are securely connected to the controller and the light strips, without any looseness, oxidation, or detachment. If the connection points are blackened or have a burnt smell, they need to be re-welded or replaced with new connectors.<br \/>\n\u25cf- Troubleshooting overloading issues: If the length of a single SPI light strip exceeds 5 meters and \u201cpower supply at both ends\u201d is not adopted, it will result in insufficient voltage at the end, causing flickering and instability. In such cases, the light strip needs to be split or additional power supply points need to be added.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"22_Step_2_Check_the_wiring_and_eliminate_the_core_issue_of_%E2%80%9Cwiring_error%E2%80%9D\"><\/span>2.2 Step 2: Check the wiring and eliminate the core issue of \u201cwiring error\u201d<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u25cf- Ensure correct wiring sequence: The SPI light strip must strictly distinguish between V+ (positive pole), GND (negative pole), and DAT (signal line). Reversing the wiring sequence will directly result in the light strip not responding or going out of control. It is necessary to check the wiring according to the light strip manual.<br \/>\n\u25cfCheck the wiring direction: The <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/products\/\" target=\"_blank\" rel=\"noopener\">SPI light strip signal<\/a> has a definite direction. It should be connected to the controller from the DIN (signal input) end, and then extended from the DOUT (signal output) end to the next section of the light strip. Reversing the connection will cause the entire light strip to lose control.<br \/>\n\u25cf- Locate the connection break point: Use the buzzer function of the multimeter to test the continuity of the circuit. If a certain section of the circuit is not conducting, it indicates an internal break or a loose solder point. In this case, the connection needs to be re-welded or the connecting wire replaced. For waterproof SPI light strips, pay attention to the sealing of the connection points to prevent water ingress and short circuit. After welding, apply hot melt adhesive to prevent moisture.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-1014\" title=\"3\" src=\"https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/3-5.png\" alt=\"3\" width=\"591\" height=\"331\" srcset=\"https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/3-5.png 591w, https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/3-5-300x168.png 300w, https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/3-5-18x10.png 18w\" sizes=\"(max-width: 591px) 100vw, 591px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"23_Step_3_Check_the_controller_and_confirm_that_%E2%80%9Cinstruction_transmission%E2%80%9D_is_normal\"><\/span>2.3 Step 3: Check the controller and confirm that \u201cinstruction transmission\u201d is normal<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u25cfController reset test: Disconnect the controller from power for 3 to 5 minutes, then reconnect it. This will clear any previous erroneous instructions. If the controller returns to normal after the reset, it indicates that the malfunction is caused by a disorder in the controller\u2019s program.<br \/>\n\u25cfController compatibility check: Ensure that the controller is compatible with the SPI light strip IC model (for example, the <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/spi\/\" target=\"_blank\" rel=\"noopener\">WS2812B<\/a> light strip requires a SPI controller that supports this model), to avoid the situation where \u201cusing a DMX controller to control the SPI light strip\u201d leads to no response; In engineering scenarios, it is necessary to connect to the DMX console through a <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/spi\/\" target=\"_blank\" rel=\"noopener\">DMX-SPI decoder<\/a>.<br \/>\n\u25cfController fault detection: Replace the test with a backup SPI controller. If the light strip functions normally after the replacement, it indicates that the original controller is damaged (such as a fault at the signal output port or program corruption), and a controller of the same model needs to be replaced. Observe the indicator lights of the controller. A constantly on green light indicates normal operation, while a flashing light indicates abnormal data transmission.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"24_Step_4_Identify_and_eliminate_signal_interference_and_resolve_the_%E2%80%9Cunstable%E2%80%9D_issue\"><\/span>2.4 Step 4: Identify and eliminate signal interference, and resolve the \u201cunstable\u201d issue<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u25cf- Reduce environmental interference: Avoid laying the SPI light strip connection lines in parallel with strong electrical lines (220V), with a spacing of no less than 30cm to prevent strong electrical interference from affecting signal transmission; In outdoor scenarios, ensure proper line shielding to avoid signal abnormalities caused by rain and dust.<br \/>\n\u25cf- Install signal enhancement equipment: If the length of a single SPI light strip exceeds 5 meters, an SPI signal amplifier must be installed to prevent loss of signal and resulting instability; if the length exceeds 10 meters, it is recommended to split the light strip and power it at both ends, and at the same time install an amplifier.<br \/>\n\u25cf- Standard wiring: The DAT signal lines should be wired separately to avoid entanglement with the V+ and GND lines, thereby reducing signal interference; it is advisable to choose shielded signal lines to further enhance the anti-interference capability.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"25_Step_5_Segment_testing_identify_%E2%80%9Clocal_fault%E2%80%9D_points\"><\/span>2.5 Step 5: Segment testing, identify \u201clocal fault\u201d points<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u25cfSegmented troubleshooting method: Divide the SPI light strips into sections of 5 meters each, and connect each section to the controller for testing. This will quickly identify the area where the system is out of control. If a certain section is out of control, it indicates that the IC chip of that section\u2019s light strip is damaged or there is a break in the circuit.<br \/>\n\u25cfDamage handling method: Cut off the damaged part, re-join the intact part at the designated cutting points, fix it with a special connector or welding, pay attention to the positive and negative poles and the wire sequence; 4-wire SPI light strips (such as WS2815) have the function of continuous transmission at breakpoints. If a single light bulb is damaged, it can be skipped without affecting the normal operation of the subsequent light strip.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-1015\" title=\"4\" src=\"https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/4-4.png\" alt=\"4\" width=\"592\" height=\"332\" srcset=\"https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/4-4.png 592w, https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/4-4-300x168.png 300w, https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/4-4-18x10.png 18w\" sizes=\"(max-width: 592px) 100vw, 592px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"III_Special_Fault_Diagnosis_for_SPI_Light_Strip\"><\/span>III. Special Fault Diagnosis for SPI Light Strip<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The SPI light strip is not controlled. Apart from the aforementioned general issues, it is mostly related to \u201cIC chips, signal transmission, and parameter settings\u201d. Here are the common specific faults and solutions. Beginners can directly follow the instructions for operation.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"31_Common_Specific_Faults_and_Solutions\"><\/span>3.1 Common Specific Faults and Solutions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u25cf- Fault 1: The entire light strip is not lit up, but the indicator light of the controller is normal \u2192 Check if the DAT signal line is connected in the wrong direction or is loose, or if the DIN terminal is connected incorrectly. Reconnect the signal line and ensure the wiring direction is correct.<br \/>\n\u25cf- Fault 2: The lights flicker, the colors are disordered, and there is no regular pattern of change \u2192 Check the compatibility between the <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/products\/\" target=\"_blank\" rel=\"noopener\">SPI controller<\/a> and the light strip IC model, or there may be signal interference; Install a signal amplifier, keep the signal lines away from high-voltage circuits, and avoid twisting.<br \/>\n\u25cf- Fault 3: Partial light strips are not lit, while the rest are normal \u2192 The IC chip of this section of the light strip has burned out or there is a break in the circuit. Cut off the damaged part, connect it with a dedicated connector, and pay attention to the positive and negative poles and wire sequence during soldering. For waterproof models, the interface needs to be resealed.<br \/>\n\u25cf- Fault 4: Unable to achieve pixel-level control (such as failure of water flow and chasing effects) \u2192 Incorrect parameter settings of the controller. Re-adjust the controller, select the corresponding IC model\u2019s control program, and ensure that the number of pixels matches the actual length of the light strip.<br \/>\n\u25cf- Fault 5: The brightness of the light strips is abnormal, flickering on and off \u2192 The power supply is unstable or overloaded. Replace the power supply with one that has sufficient power, split the excessively long light strips, and add more power supply points.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"32_Precautions_for_Checking_SPI_Light_Strip\"><\/span>3.2 Precautions for Checking <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/spi\/\" target=\"_blank\" rel=\"noopener\">SPI Light Strip<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u25cfAvoid excessive bending of the light strips to prevent internal wiring from breaking and IC chips from falling off. The bending radius during installation should be no less than 5 cm.<br \/>\n\u25cfThe length of each SPI light strip is not recommended to exceed 10 meters. If it exceeds this length, it should be split or powered at both ends, and a signal amplifier should also be installed.<br \/>\n\u25cfWhen wiring, the DAT signal line should be routed separately to avoid being tangled with the V+ and GND lines, thereby reducing signal interference.<br \/>\n\u25cfChoosing a 4-wire SPI light strip (such as WS2815) can effectively reduce the probability of \u201cthe entire strip going out of control due to the failure of a single light bulb\u201d, making it suitable for scenarios with high requirements for stability.<br \/>\n\u25cfDuring the welding process, the temperature should not be too high to prevent the IC chips from being burned. The welding time should be controlled within 2 to 3 seconds.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-1016\" title=\"5\" src=\"https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/5-2.png\" alt=\"5\" width=\"592\" height=\"330\" srcset=\"https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/5-2.png 592w, https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/5-2-300x167.png 300w, https:\/\/www.mingxuelighting.com\/wp-content\/uploads\/2026\/06\/5-2-18x10.png 18w\" sizes=\"(max-width: 592px) 100vw, 592px\" \/><\/p>\n<p>The SPI light strip is not controlled. The core issue is not related to \u201cproduct quality\u201d, but rather is caused by details such as \u201cinstallation, equipment matching, signal transmission\u201d, etc. As long as you follow the logic of \u201c5-step general troubleshooting, targeted solutions for specific problems\u201d, you can quickly locate the fault. Most problems can be self-diagnosed and resolved without the need for professional technicians.<br \/>\nIf the above troubleshooting steps fail to solve the uncontrolled problem, it may be a quality issue with the light strip or the controller itself (such as batch damage of IC chips, controller program failure). In this case, it is recommended to contact professional technicians for testing or replace with products from a reputable manufacturer.<br \/>\nAs a <a title=\"LED strip light manufacturer\" href=\"https:\/\/www.mingxueled.com\/\" target=\"_blank\" rel=\"noopener\">professional LED light strip manufacturer<\/a>, our SPI light strips (such as WS2811, WS2812B, WS2815, etc.) have all undergone strict quality inspections and are equipped with complete installation guidelines and technical support. From product selection, installation guidance to fault troubleshooting, we provide professional services throughout the process, effectively reducing the problems of uncontrolled operation during use and safeguarding your lighting decoration project. If you encounter any issues during use, you can <a title=\"contact us\" href=\"https:\/\/www.mingxueled.com\/contact-us\/\" target=\"_blank\" rel=\"noopener\">contact<\/a> our technical team at any time to obtain one-on-one solutions.<\/p>\n<p>&nbsp;<\/p>\n<p>MINGXUE is the brand name of Shenzhen Mingxue Optoelectronics Co., Ltd. For international markets, the company operates under the brand name MINGXUE Lighting. Our official international website is mingxueled.com.<\/p>\n<p>&nbsp;<\/p>\n<p>Published by Mingxue Lighting | Founded 2005 | Shenzhen R&amp;D Center + Foshan Manufacturing Base | 24,000 sqm | ISO 9001 Certified<\/p>\n<p>&nbsp;<\/p>\n<p>Facebook\uff1ahttps:\/\/www.facebook.com\/profile.php?id=100089993887545<br \/>\nInstagram\uff1ahttps:\/\/www.instagram.com\/mingxuelighting.factory\/<br \/>\nYouTube\uff1ahttps:\/\/www.youtube.com\/channel\/UCMGxjM8gU0IOchPdYJ9Qt_w<br \/>\nLinkedIn\uff1ahttps:\/\/www.linkedin.com\/company\/mingxue\/<\/p>","protected":false},"featured_media":0,"parent":0,"menu_order":0,"template":"","news-category":[6],"class_list":["post-245","news","type-news","status-publish","hentry","news-category-industry-news"],"_links":{"self":[{"href":"https:\/\/www.mingxuelighting.com\/ja\/wp-json\/wp\/v2\/news\/245","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mingxuelighting.com\/ja\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.mingxuelighting.com\/ja\/wp-json\/wp\/v2\/types\/news"}],"wp:attachment":[{"href":"https:\/\/www.mingxuelighting.com\/ja\/wp-json\/wp\/v2\/media?parent=245"}],"wp:term":[{"taxonomy":"news-category","embeddable":true,"href":"https:\/\/www.mingxuelighting.com\/ja\/wp-json\/wp\/v2\/news-category?post=245"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}