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🔧 Diagnose LED TV backlights like a pro — fast, safe, and foolproof!
The TKDMR LED Lamp Bead TV Backlight Tester is a compact, professional-grade tool designed to safely and accurately troubleshoot LED TV backlight issues. Featuring an adaptive 0-300V output with 30mA current and double isolation safety, it quickly identifies faulty LEDs without damaging components. Ideal for technicians and DIYers, it saves time and money by eliminating guesswork and the need for multiple batteries or panel disassembly.
| ASIN | B082GVB68Y |
| Best Sellers Rank | #69,046 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #62 in Voltage Testers |
| Brand | TKDMR |
| Color | white |
| Customer Reviews | 4.6 4.6 out of 5 stars (739) |
| Date First Available | April 16, 2019 |
| Item Weight | 8.8 ounces |
| Item dimensions L x W x H | 3.7 x 2.1 x 1.1 inches |
| Item model number | TD2B |
| Manufacturer | TKDMR |
| Measurement Type | Voltmeter |
| Min. Operating Voltage | 85 Volts |
| Power Source | Electric |
| Product Dimensions | 3.7 x 2.1 x 1.1 inches |
| Specification Met | CE, RoHS, UL |
| Style | Digital |
| UPC | 789659036201 |
S**.
Right tool for the job. More economical in the long run than a series of 9V batteries.
I have seen quite a few online videos and instructions on how to test LED TV backlights using 9V batteries instead of a “costly tester”. Unfortunately, testing LED TV backlights with 9V batteries is not as economical as it may seem. At 3V per LED, testing a strip of 6 LED would require at least two 9V batteries. Testing an array of twenty LEDs would require about six batteries. Where I'm from a 9V battery is about $3.50 each (x6 batteries) = $21 plus tax. That in addition to wires plus time and effort assembling it. This LED tester is $19 delivered to my door. It comes complete with test probes and is designed for one specific purpose only – Test LEDs. Whether it’s a single LED, a strip of six or an entire array of twenty plus LEDs, this tester will test them all. I used it to test the top and bottom half backlight arrays of a 55-inch LG HDTV I was repairing. Not only I was able to identify the defective strip from the entire array in seconds, but I also zeroed in on the actual bad LED. For individuals with even the most basic electronics background, this tool is simple to use with virtually no risk of damage to the LED since the output is adaptive and automatically adjusts to the output required of however many LEDs are tested at the same time. In contrast, a series of 9V batteries always provide full power and can easily damage LEDs. Build quality is decent but I’m not sure how long this will last on heavy-duty repair shop use. This tester is best suited for DIY, hobbyist, students or technicians training. Anyone looking for an easy and effective way of troubleshooting any LED issues including TV backlights this would be your tool. It’s actually more economical in the long run than a series of 9V batteries.
P**.
Great Tool
Worked perfectly to diagnose and test TV backlight LEDs.
R**P
Fixed my 65" TCL and saved myself a lot of money.
I used the TKDMR LED Lamp Bead TV Backlight Tester on a 65" TCL TV. The tester instructions were clear and easy to follow ( although I am a Certified YouTube TV tech. Lol! ) I found one LED on one strand that was bad amd replaced that strand for less than $5. Viola! I now have a perfectly working 65" TV in my radio shack that I use as a World Map. I definitely got my money's worth. Will I need it again? Maybe.
2**K
It works as advertised
Used it to test LED backlight for my 5 year old Samsung TV. Simple to use. Red to the positive and black to the negative. If the strip has no bad lights, then all of them light up slowly to their max voltage. However, the strips I have comes in two forms that need to be connected together when installed in the TV. I find the front strip need to be connected to the back strip for the LED tester to be able to work on the front strip. I can test the back strip without connecting it to the front strip but not vice versa.
M**R
Worked Perfectly
Worked perfectly!
R**E
LED test light
Perfect for that quick testing job. Tests individual LED or entire strip without having to make any adjustments. Plug it in and test! That simple. Great price. Fast shipping.
K**N
Worked as advertised.
Does the job. worked on single strips and strips in series. great little tester at a good price.
J**E
Just what you need.
This only has one function, but it does it so well. Even if you don’t have an electronics background, you can use this to discover which LED bulbs are good, and which aren’t. If you fix TVs regularly, this will save you a heap of time. It reads the LED bulb, or even an entire string of them, and gives it whatever power it needs to light ‘em up. If they don’t light, they’re bad. Even if you’re blind or not looking at them, you’ll know based on the voltage they take which one, or which string, is bad. For example; my most recent TV fix was a big 55” that wouldn’t boot up. I used this tester to test the LED lights from the back side, using their connectors to the power board. Checking each string showed 96 volts, until I got to the bad one, which showed 106 volts. Bingo. Bad LED string. Sure enough, replacing that string fixed the TV. But I could’ve gone even further, and checked each individual LED bulb with this. When I found the offending bulb, I could literally solder a single new bulb in to fix it. Do yourself a favor and get one of these meters. Sure, you can use a multimeter, but this is so much easier. I hope this helps.
D**N
Facile à utiliser. Ajustement auto du voltage
R**Y
utiliser pour tester mes led sur ma télé et sa fonctionne tres bien et a petit prix