--- product_id: 103195973 title: "Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V" brand: "sid led" price: "₱7209" currency: PHP in_stock: true reviews_count: 8 category: "Sid Led" url: https://www.desertcart.ph/products/103195973-multipurpose-tester-for-led-tv-backlight-and-constant-current-driver store_origin: PH region: Philippines --- # 0-330V adjustable output 0-150mA precise current control Universal LED compatibility Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V **Brand:** sid led **Price:** ₱7209 **Availability:** ✅ In Stock ## Summary > ⚡ Empower your LED repairs with precision and confidence! ## Quick Answers - **What is this?** Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V by sid led - **How much does it cost?** ₱7209 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/103195973-multipurpose-tester-for-led-tv-backlight-and-constant-current-driver) ## 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 - • **Safe Polarity Testing:** No burn out risk when testing single LEDs with wrong polarity—protect your components. - • **Compact & Professional Kit:** Includes probes, cables, and manual in a sleek design—perfect for on-the-go repairs and diagnostics. - • **All-in-One LED Diagnostic Tool:** Test LED strips, panels, single beads, COB lights, and TV backlights effortlessly. - • **Real-Time Circuit Health Check:** Instantly identify open/short circuits and verify constant current driver boards with confidence. - • **Precision Voltage & Current Control:** Manually adjust voltage (20-330V) and current (20-150mA) for tailored LED testing. ## Overview The SID LED KT4H Multipurpose Tester delivers adjustable DC output voltage up to 330V and current up to 150mA, enabling real-time testing of LED backlights, strips, panels, and constant current driver boards. Its safe polarity feature prevents damage during single LED testing, while its versatile compatibility covers all LED types. Designed for professionals and DIYers alike, this compact tool streamlines LED diagnostics and repairs with high accuracy and ease. ## Description Product model: KT4H Vin: AC 85-265V Vout: DC 0-330V (Automatic + Adjustable) Voltmeter Accuracy: 30V, Current >30mA and keep stable, and the LED strip working normal, then the Constant current board is normal. Review: Very useful - It's very simple to use, solve me a lot, now I can check led strings an also verifies tv's led strip Review: It worked for my TV - I bought this to test and repair a LG led tv. It worked great for testing the existing led's. I also used this to test some single led's from a grow light. Found the bad 1 quickly and replaced it. ## Features - Real-time testing voltage and current of constant current drive board. - Testing LED strips, LED panels, single LED bead, COB lighting sources, backlight of LED TV, displays, computers and so on. - Testing voltage parameter of various of electronic components;Testing LED light on vehicle. - No burn out when testing single LED bead with wrong polarity. (Set voltage around to 20V and the current switch to 1mA) - Compatible with all the LED strips (high voltage or low voltage). Manual adjusting the range of testing voltage (20-330V/DC) and current (20-150mA). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07MT87G2P | | Best Sellers Rank | #351,976 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #544 in Multi Testers | | Brand | SID LED | | Brand Name | SID LED | | Color | Black, Red | | Compatible Devices | LED strips, LED panels, single LED beads, COB lighting sources, LED TV backlights, displays, computers, vehicle LED lights, constant current driver boards | | Customer Reviews | 4.7 out of 5 stars 290 Reviews | | Included Components | LED tester,Test probe,power cord,User Manual,socket cable,connection clip,bag | | Manufacturer | SID LED | | Measurement Type | Ammeter, Voltmeter | | Model | KT4H | | Part Number | 613739727430 | | Power Source | Corded Electric | | Style | Electronic | | Style Name | Electronic | | UPC | 613739727430 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 40 Degrees Celsius | ## Product Details - **Brand:** SID LED - **Color:** Black, Red - **Power Source:** Corded Electric - **Style:** Electronic - **Upper Temperature Rating:** 40 Degrees Celsius ## Images ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 1](https://m.media-amazon.com/images/I/61VSfBEgE3L.jpg) ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 2](https://m.media-amazon.com/images/I/51V5DiSmF+L.jpg) ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 3](https://m.media-amazon.com/images/I/616nGVpbpcL.jpg) ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 4](https://m.media-amazon.com/images/I/41RmoB0d8dL.jpg) ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 5](https://m.media-amazon.com/images/I/61qvhig--EL.jpg) ## Questions & Answers **Q: will this work on my 70 inch flat screen 110-240v-50/60 Hz, 220w usb, Dc 5v- 500mA?** A: Yes ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very useful *by F***Y on July 3, 2024* It's very simple to use, solve me a lot, now I can check led strings an also verifies tv's led strip ### ⭐⭐⭐⭐⭐ It worked for my TV *by P***G on March 9, 2025* I bought this to test and repair a LG led tv. It worked great for testing the existing led's. I also used this to test some single led's from a grow light. Found the bad 1 quickly and replaced it. ### ⭐⭐⭐⭐⭐ This is the one to get. *by B***K on October 3, 2025* I say this is the one to get. The dual display (voltage and current) is very helpful. I wouldn't call the readings precise but completely adequate for the task. This is my first pick for safely troubleshooting LED backlight strips in monitors and TVs. The test leads that came with mine were better than average. For the money this is a great little gadget if you service monitors or TVs. ## Frequently Bought Together - SID LED Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Super Strong Suction Cup LCD LED TV Screen Panel Removal Tool (Set of 2) - TKDMR LED Lamp Bead TV Backlight Tester - for All LED Lights Repair Output 0-300V (0-300V 30mA) --- ## 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.ph/products/103195973-multipurpose-tester-for-led-tv-backlight-and-constant-current-driver](https://www.desertcart.ph/products/103195973-multipurpose-tester-for-led-tv-backlight-and-constant-current-driver) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-06-09*