--- product_id: 59150397 title: "Lamp and Backlight Tester Need to Disassemble LCD Screen for All LED Lights Repair Output 0-260V" brand: "sid led" price: "NT$1709" currency: TWD in_stock: true reviews_count: 8 category: "Sid Led" url: https://www.desertcart.tw/products/59150397-lamp-and-backlight-tester-need-to-disassemble-lcd-screen-all store_origin: TW region: Taiwan --- # 0-260V output range 2mA precise current for safe LED testing Double isolated safe protection Lamp and Backlight Tester Need to Disassemble LCD Screen for All LED Lights Repair Output 0-260V **Brand:** sid led **Price:** NT$1709 **Availability:** ✅ In Stock ## Summary > 🔧 Diagnose LED faults like a pro — never miss a flicker again! ## Quick Answers - **What is this?** Lamp and Backlight Tester Need to Disassemble LCD Screen for All LED Lights Repair Output 0-260V by sid led - **How much does it cost?** NT$1709 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/59150397-lamp-and-backlight-tester-need-to-disassemble-lcd-screen-all) ## Best For - sid led enthusiasts ## Why This Product - Trusted sid led brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Safety Features:** Double isolation and intelligent current adjustment ensure user safety and device longevity. - • **Universal Compatibility:** Works seamlessly with LED beads, strings, panels, COB, and integrated LED lights for versatile diagnostics. - • **Fault Detection Made Easy:** Quickly identifies open circuits, short circuits, and LED bead counts in series for efficient troubleshooting. - • **Precision Voltage Control:** Soft start mode gradually ramps voltage up to 260V, protecting delicate LED components. - • **Eye-Safe Low-Light Testing:** Tests LED backlights without dazzling brightness, reducing eye strain during prolonged use. ## Overview The SID LED GJ2B Lamp and Backlight Tester is a professional-grade diagnostic tool designed for precise testing of LED backlights and components. Featuring a wide input voltage range (85-265V) and an adjustable output up to 260V with soft start, it safely identifies LED faults such as open circuits and shorts without damaging components or straining your eyes. Its double isolated protection and intelligent current control make it an essential device for LED manufacturers, repair professionals, and hobbyists aiming for flawless LED repairs. ## Description Model: GJ2B Input Voltage: 85-265V (International General) Output Voltage: 0-260V Output Current:2mA Voltage Range:0-260V (Adopt soft start mode, the voltage slowly increases.About 4% of the reasonable error!) Main Application: - Testing the LED TV backlight need to disassemble LCD screen. - Testing of LED stirng, LED panel,COB and integrated LED lights,etc.(DO NOT LOOK DIRECTLY AT THE LIGHT.) Testing of single LED bead.(Don’t connect the probes to the LED for a long time if you can’t determine the “+”and “-”.) - Test voltage parameters for DC power(<300V). - According to the voltage to determine open-circuit,short circuit and the number of the light beads in series. - Check for electric leakage. Product characteristics: - Dedicated Function for LED Beads,LED Stirng, LED Panel,COB and Integrated LED Lights,etc. - Double Isolated Safe Protection. - Voltage and Current Intelligent Adjustment. ATTENTIONS: 1. Please disconnect the power of the detected object first.(If you use to test TV backlight,you should make sure the LCD screen is powered on.) 2. Plug in power,it can be used after 5 to 10 seconds to reach 260V.The soft start mode make the backlight getting brighter slowly. 3. Don’t connect the probes to the LED for a long time if you can’t determine the “+”and “-”. 4. Don’t touch the output terminal of probes for a long time .It’s safe for touch the probes in short time periods.Matters need attention:It's suitable for LED manufacturers,used for testing LED lamp bead,lamp board,lamp bar.With moderate brightness and not dazzling.GJ2B is not suitable for testing TV backlight without disassembly.You can disassembling the screen to test it.It has no size limited. Review: SID LED Lamp and Backlight Tester - This is the one most You-tubers use and it works like a charm. I repair TVs as a hobby. SID LED Lamp and Backlight Tester Review: Works good. - Good quality, good condition, fast delivery. ## Features - Excellent tool for diagnosing and locating bad LEDs in backlights. - With help of this tool, you can know the LED light problem quickly. - It test in low-light, and will not damage your eyes. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B078BD2CPH | | Best Sellers Rank | #1,050,464 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #972 in Voltage Testers | | Brand | SID LED | | Brand Name | SID LED | | Color | Black, Gray, Red, white | | Customer Reviews | 4.6 out of 5 stars 208 Reviews | | Included Components | 1 pcs LED tester,1 pcs Test probe,1 pcs power cord,1 pcs User Manual | | Item Weight | 0.02 kg | | Manufacturer | SID LED | | Maximum Operating Voltage | 260 volts | | Measurement Type | Voltmeter | | Min. Operating Voltage | 85 volts | | Minimum Operating Voltage | 85 volts | | Model | GJ2B | | Number of Items | 1 | | Part Number | GJ2B | | Power Source | Corded Electric | | Style | Digital | | Style Name | Digital | | UPC | 613739727409 | | Unit Count | 1 Count | ## Product Details - **Brand:** SID LED - **Power Source:** Corded Electric - **Style:** Digital - **Color:** Black, Gray, Red, white - **Item Weight:** 0.02 Kilograms ## Images ![Lamp and Backlight Tester Need to Disassemble LCD Screen for All LED Lights Repair Output 0-260V - Image 1](https://m.media-amazon.com/images/I/61-v5aXI8pL.jpg) ![Lamp and Backlight Tester Need to Disassemble LCD Screen for All LED Lights Repair Output 0-260V - Image 2](https://m.media-amazon.com/images/I/61LC85kTH4L.jpg) ![Lamp and Backlight Tester Need to Disassemble LCD Screen for All LED Lights Repair Output 0-260V - Image 3](https://m.media-amazon.com/images/I/61ABnYNVHBL.jpg) ![Lamp and Backlight Tester Need to Disassemble LCD Screen for All LED Lights Repair Output 0-260V - Image 4](https://m.media-amazon.com/images/I/71pMDtWcrVL.jpg) ![Lamp and Backlight Tester Need to Disassemble LCD Screen for All LED Lights Repair Output 0-260V - Image 5](https://m.media-amazon.com/images/I/41RmoB0d8dL.jpg) ## Questions & Answers **Q: will this work for ccfl blubs in a sony tv** A: No…only on LED lights **Q: Difference between 260 and 330 tester, will they both work on 60” Samsung tv?** A: Model:GJ2B Output Voltage:0-260V DC.Output Current:2mA. It's suitable for LED manufacturers,used for testing LED lamp bead,lamp board,lamp bar.With moderate brightness and not dazzling.GJ2B is not suitable for testing TV backlight without disassembly.You can disassembling the screen to test it. Model:GJ2C Output Voltage:0-320v DC.(Automatic Adjustment).Output Current:30mA. It's suitable for testing TV backlight without disassembly.With high brightness,you can judge the TV backlight is well or not without disassembling the screen. Both of the two models have no size limited. **Q: Does this measure watt? i need to be able to test watt of led light** A: Only the real-time power of LED lamp can be calculated, but the rated power of LED lamp cannot be measured. The rated power of LED lamp is provided by the manufacturer.If you want to test real-time power, you need a current meter in series.The power is calculated by formula:volts X Amps = watts. **Q: Can I use it as permanent power supply?** A: No, it's not designed to be a power supply. It is for testing LED's. ## Customer Reviews ### ⭐⭐⭐⭐⭐ SID LED Lamp and Backlight Tester *by J***. on April 26, 2026* This is the one most You-tubers use and it works like a charm. I repair TVs as a hobby. SID LED Lamp and Backlight Tester ### ⭐⭐⭐⭐⭐ Works good. *by H***D on July 21, 2025* Good quality, good condition, fast delivery. ### ⭐⭐⭐⭐⭐ Much better price than most other places *by R***E on August 12, 2018* I've wanted one of these for a while but thought they were overpriced (Usually around $50 on other sites). I saw this and had to grab it. It is a major time savor when trying to diagnose a TV. It's easy to use - the long wires allow it to reach any part of the TV. It does send electricity through the probes and it will bite if you touch the probes to your skin. I've used it several times and never had a problem with it. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tw/products/59150397-lamp-and-backlight-tester-need-to-disassemble-lcd-screen-all](https://www.desertcart.tw/products/59150397-lamp-and-backlight-tester-need-to-disassemble-lcd-screen-all) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-08-26*