LED Tester - How to Test LED Backlighting - SID GJ2C LED TV Backlight Tester
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- Опубликовано: 24 май 2016
- How to Test LED Backlighting
CLICK HERE to Purchase: www.shopjimmy.com/sid-gj2c-led...
Here we have the SID GJ2C LED TV backlight tester.
This tester uses AC power and comes with two test probes.
There are multiple tests that can be run using this device. You can test the cable running to the LEDs in your TV. You can test and individual LED strip.
And also you can test individual LEDs.
One great thing for TV repair, is if you have the symptom of no backlights in your LED TV, you can use this device to help determine if the problem is the LED backlights or the power supply/LED driver board, by directly testing the backlights.
The first test we will show, is how to test the cable running to the LEDs in a TV. Most cables will come from the power supply or LED driver board and run to the LEDs in the panel.
I will start by identifying which test point on the connection is positive and which is negative. You can do this by looking on the board, to see if they are labeled or if the individual wires are labeled as well.
Your TV may have one connection to the LEDs or multiple. It is important to test all of them, to see which if any of the LEDs are bad.
I have powered on my tester and now will insert the probes into this wire connection. Give the device 5 seconds to allow it to adjust the voltage.
Next, I can check to see if any of the LEDs are turning on.
If you have removed the TV panel, you can look on the screen side of the TV to see if anything is illuminated.
If you have not removed the panel, you can look through the back of the TV to see if anything has lit up.
It may help to be in a dark room, when looking through the back panel.
After I have tested the first strip, I will move on to the next strip, at this wire connection and so on, until I have tested all of the LEDs.
If you do have a bad LED strip, it is recommended to replace all of the strips in your TV, as once one of them goes out, they can all begin to fail.
The next test that we will show, is how to test the LED strip. As you can see we have two identical strips. I will begin by identifying the positive and negative test points at the end of the strip. Most strips should be labeled as positive and negative.
Then I will power on my LED tester and then place the probes on the appropriate test point. Give the device 5 seconds to allow it to manage the voltage. As you can see we have a good LED strip here, with all of the LEDs here illuminating at the same brightness.
As we test this next strip, you can see that the LEDs are dim and some of them do not light up at all.
We will now show how to test an individual LED.
For the individual LEDs to help identify the positive and negative side, you can look to the end, where they are labeled positive and negative for those test points and then most strips should follow the positive side all the way down that strip and the negative side all the way down the strip.
Once again, I will power on my tester and use the probes to run the test.
TV Repair Made Easy™
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Great video, thanks for taking the time to make it.
Thk.with this tester ,can i test directly en the conectors LED+ ,LED- to khnow if leds are ok or no after that i open remove the panel?
All my LEDs in a strip test fine if I test right at the diode (like near the end of the video) but If I send 20v to the + and - at the the end of the strip, it get no power at all to any of the leds. Thoughts? This goes for EVERY strip in my panel. Could all the traces in all the strips be fried?
if the tester shows both pairs of led pins 00.00 when tv is on,are one or more led lights shorted?
psu and video board, tcon are ok.
also the lg shows on board hi 100 volts and lo 70 volts,is that the variable power illumination of the led driver for lg 42 ln613s?
Can i use this as a DC power supply ? I want to build an arc with tv leds.
Is it worth buying a proper led backlight array strip tester vs just using a bunch of battery’s together to achieve similar result
I am trying to purchase one but it says access denied since I live over seas.
very use full sir thanks for videos
อยากได้สั่งซื้อสินค้าทางไหนครับ
can the tester give an electric shock if set at the higher voltage output
My led tv is blinking and have been quoted a big price to fix it.. Repair man said leds are gone but im not sure?? Why would they all blink at same time if they are gone,,, please help.. cheers
Hi can this be use to test LED light bulb?
Even if a strip comes on but is drawing too much current etc then would a power supply turn the backlight off.
Where to purchase this led tester
ANY BODY SUGGEST ME, I HAVE SAME PROBLEM IN MY MICROMAX LRD 32".WHAT IS SPARE LED BEED VOLTAGE WHERE TO BUY
very use full sir thanks for
Do you know what is the difference between Sid GJ2C and Lihuada GJ2C ?
very useful thank you
Kalau di indonesia dimana bisa beli?
Very useful video
if i had the proper voltage, do you think i can turn these into lighting for my room? there very bright lol
Evry tv is diffrent..how to know how many voltage led you need and how many watts..also what kind cool white ..warm white..so pls help us to know what to buy..the more you tell us the more people whose gonna buy to your shop...THANKS
I've got to replace my LED backlights on my 5yr old 65" Philip's PFH5250/96 as the LEDs have gone dim on 1 side :) not looking forward to this to be honest. Nobody seems to have taken this model apart on YT :(
looks like all the LED's are wired in parallel connections, so why do the tv stop showing backlight when a single one goes bad
Is it an "automatic" adjustable dc power supply? Basically? I'm seriously trying to get a better idea so I can decide if I need one.
Did u get an answer
The user should adjust the voltage or it is automatically andjustable?
Since the voltage may not be written on the led strip.
Can a strip be bad even though it comes on??
All LEDs worked but 2... but when trying them after setting up TV, none of them turned on...
Has anyone from the UK bought this product? I just purchased this & only realised it had a 2 pin plug once it had arrived 🤦🏻♀️ lol. Will this work fine with a US to UK plug adaptor?
hi there,
i have some spare led strips from a lcd tv and i want to use them for a project!
how much voltage it needs to turn on?
get a tester. that will tell you.
How many prices ?indian money
Due you have or Where to get LC320DXN-SFR2 LED backlight strips
how did you get the name of the backlight
you can build your own tester like i did you need a wires + bridge rectifiere + 220v/50w spot light
link the ac input of the bridge to the Ac source and link the(+)Dc to the first pin of the 220v spot light and the link a red wires to the second pin of the sport light to get the poditive of your tester and the negative liken to the (-) of the bridge rectifier make it black wire .but be carefull of smal electric shock
Your period key appears to be broken. Here's a few extra's ................
i need back lights for my lg 47Ln5400 how much r da.
🤣🤣🤣🤣🤣🤣 stupid question. not even realted to the video.
How many volts does this LED's turn on at? Im trying to light them up with a VOltage variable power supply. ALso how many amps cant they exceed?
Yea
my question is meter is showing 19.9 on your tester. is it the voltage set up to test the LED or?
the tester is automatic. it will show the voltage where the led starts pulling the correct amps.
Hello There,
What Causes these Strips or Single Diodes to burn out? Especially in So Short of Time, Like a year or 2 Usually?
Also if i replace the strips is it Likely They will they burn out again in the same amount of time has the 1st time?
I Also would like to fix the Issue that is causes the (Strips or Single Diodes) to burn out in the first place, So I Dont Have To Replace So Often.
Really Would Appreciate Any Tips or Ideas u Guys Could Share!
Working on a -----> TCL 65S401TKAA 65" 4K Ultra HD Roku Smart LED HDTV
Thanks Alot in Advance For Your Time!!!
usage, the brigtness level and the running hours and the heat.
gonna get this, cool video
I dont mean to be so off topic but does someone know of a way to log back into an Instagram account??
I was stupid forgot the account password. I would appreciate any help you can offer me!
@Aidan Junior Instablaster =)
how do i use a multimeter to check the lights?
you can't
Nice
The led turn on by pwm from driver board , and not able change with another leds , because these current sensing by cntroller ic !!! And if current afew goes to up or down , tv will be turn off , protect him !!
It's weird, but in all these videos the LED strips are stuck down. Mine have copper backs and are held by a few rows of little screws along with the background paper.
I did finally find my problem. Instead of one or two lights being out, one strip had all the LED lights flickering. Replacements are on the way.
Genau da ist der Fehler im Messsystem,einzeln ja leuchten aber zusammen ist 31 Voltda mache was anderes raus, Backlight Veranda
Hello
اسلام عليكم هاي وين تنباء اريد
هذا عراقي مسوي مثله جهاز كلش بسيط
I WAS TOLD LEDs last for years like cds
I need backlights for my tv, but you don't have them
ebay
L.e.d.
very use full sir thanks for videos
very use full sir thanks for