TKDMR LED Lamp Bead and Backlight Tester no Need Disassemble LCD Screen All LED Strips Lights Repair Test Output 0-300V
Send 20pcs lamp beads randomly.
We are the only manufacturer. Please identify our brand. If you find something wrong, or someone else uses our brand. please contact us!! thank you!
PLEASE NOTE: THE INPUT VOLTAGE VOLTAGE IS:85-265V INTERNATIONAL GENERAL
SO IT CAN ALSO BE 110V-220V!!
1.Overview
TD2B LED TV Backlight tester is a light source power supply that consist of isolating switch power supply , constants-current circuit , current control circuit and LED digital voltage display system .
2.Characteristics
1) Voltage Output: 0-300V DC ( TD2B )
2) Current Output: 0.15mA (starting curren)0-30mA ( TD2B )
3) Voltage Input: 85V-245V AC 50/60HZ
4) Power Input: ＜20VA
5) Temperature: 20-40℃
3. Instructions
1) Plug the power supply,Voltage shows around 156V(TD2B)and rising to around 300V(TD2B) after few seconds.
2) When testing,use the red and black pen to touch the anode and cathode of the LED ight respectively.The light will automatically change from slight brightness to high lightness gradually(3-5s) and then stabilize.The voltage display is the operating voltage of the light at that time
4.Test method without disassembling the screen
To lighting the screen must meet at least three requirements:A.backlight is on,B.power supply to the screen,C.signal supply to the screen.Otherwise,we cannot see the light from the screen or it is very dark.
(1) Unplug the interface sockets of the constant current plate and light bar.
(2) Insert the Red and Black pens of the tester into the anode and cathode of the interface of the LED light bar.
(3) Turn on the TV power supply and power the TV up normally(except for the constant current plate),at this time,if the light bar,LCD,main board and logic board all work normally,normal images can be seen from the screen.The brightness may be lower than the normal brightness of the original TV set.The output current of the tester shall adapt to the LED backlight bars of all sizes of TV sets,thus the brightness is relatively lower compared to the one -to-one constant current plate of the original TV set,which is a normal phenomenon.
5. Testing Tips
1) For the TV has more than one groups of backlight,compare the voltages of each group,if the voltage difference more than 3V or 3%,it means the light bar has some problems.
2) For the TV only has one groups of backlight,it can also be compared with the good light bar of the same model,judging whether the light bar is good or not by comparing the voltage.
3) Testing the steady voltage value of the stabilivolt tube:connect the red pen with the cathode of the diode and the black pen with the anode,the voltage value displayed in the voltmeter is the steady voltage value of the stabilivolt tube.(the voltage error is normal within 5%)Control the testing time within 3S to avoid the severe heating of the stabilivolt tube of above 20v.
4) The voltage display should be around 300V(TD2B)in open circuit,if the voltage display not change when testing,it means the LED we test is in open circuit or the probes in poor contact.
5) When testing,the voltage displayed =00.0, indicating that the tested light bar or the lamp bead short-circuits,It also will display 00.0V when touch the two probes each other.
6) When testing the single LED beads,the voltage display lower than 2V and the LED beads not working,the electric leakage of the LED beads may exist.
7) When testing two subjects without electrical connection,if the voltage displayed is lower than the open circuit voltage,it indicates that there is electric leakage between the two subjects tested.
WARRANTY
1. This product is guaranteed up to one year from purchase,power cord and probe can be replaced In one month.
2. If there are some performance problems,simply return it in its original condition within 30 days of receiving it.In the warranty period,we will repair and ship you an good tester.
3.The warranty period will be extended for three months after we repair the bad products.
4. Postage fee paid by buyer.
5. Please note that the guarantee policy does not apply to.
1) Products has man-made damage or accidental damage such as excessive voltage applied to the input,high temperature,water damage drop and break,mechanical damage and corrosion.
2) Destroy the label of the products.
3) The warranty period or maintenance period has expired.
If you need to customize the product, we can also meet your requirements.
The customer has made the 12V DC input, and also has the 50VDC output.
Please contact us .We can ODM/OEM if you need.
PACKAGE INCLUDE:
1x Tester
1x 20A Tester probe
1x Power line
TKDMR LED Lamp Bead and Backlight Tester no Need Disassemble LCD Screen All LED Strips Lights Repair Test Output 0-300V
Send 20pcs lamp beads randomly.
We are the only manufacturer. Please identify our brand. If you find something wrong, or someone else uses our brand. please contact us!! thank you!
PLEASE NOTE: THE INPUT VOLTAGE VOLTAGE IS:85-265V INTERNATIONAL GENERAL
SO IT CAN ALSO BE 110V-220V!!
1.Overview
TD2B LED TV Backlight tester is a light source power supply that consist of isolating switch power supply , constants-current circuit , current control circuit and LED digital voltage display system .
2.Characteristics
1) Voltage Output: 0-300V DC ( TD2B )
2) Current Output: 0.15mA (starting curren)0-30mA ( TD2B )
3) Voltage Input: 85V-245V AC 50/60HZ
4) Power Input: ＜20VA
5) Temperature: 20-40℃
3. Instructions
1) Plug the power supply,Voltage shows around 156V(TD2B)and rising to around 300V(TD2B) after few seconds.
2) When testing,use the red and black pen to touch the anode and cathode of the LED ight respectively.The light will automatically change from slight brightness to high lightness gradually(3-5s) and then stabilize.The voltage display is the operating voltage of the light at that time
4.Test method without disassembling the screen
To lighting the screen must meet at least three requirements:A.backlight is on,B.power supply to the screen,C.signal supply to the screen.Otherwise,we cannot see the light from the screen or it is very dark.
(1) Unplug the interface sockets of the constant current plate and light bar.
(2) Insert the Red and Black pens of the tester into the anode and cathode of the interface of the LED light bar.
(3) Turn on the TV power supply and power the TV up normally(except for the constant current plate),at this time,if the light bar,LCD,main board and logic board all work normally,normal images can be seen from the screen.The brightness may be lower than the normal brightness of the original TV set.The output current of the tester shall adapt to the LED backlight bars of all sizes of TV sets,thus the brightness is relatively lower compared to the one -to-one constant current plate of the original TV set,which is a normal phenomenon.
5. Testing Tips
1) For the TV has more than one groups of backlight,compare the voltages of each group,if the voltage difference more than 3V or 3%,it means the light bar has some problems.
2) For the TV only has one groups of backlight,it can also be compared with the good light bar of the same model,judging whether the light bar is good or not by comparing the voltage.
3) Testing the steady voltage value of the stabilivolt tube:connect the red pen with the cathode of the diode and the black pen with the anode,the voltage value displayed in the voltmeter is the steady voltage value of the stabilivolt tube.(the voltage error is normal within 5%)Control the testing time within 3S to avoid the severe heating of the stabilivolt tube of above 20v.
4) The voltage display should be around 300V(TD2B)in open circuit,if the voltage display not change when testing,it means the LED we test is in open circuit or the probes in poor contact.
5) When testing,the voltage displayed =00.0, indicating that the tested light bar or the lamp bead short-circuits,It also will display 00.0V when touch the two probes each other.
6) When testing the single LED beads,the voltage display lower than 2V and the LED beads not working,the electric leakage of the LED beads may exist.
7) When testing two subjects without electrical connection,if the voltage displayed is lower than the open circuit voltage,it indicates that there is electric leakage between the two subjects tested.
WARRANTY
1. This product is guaranteed up to one year from purchase,power cord and probe can be replaced In one month.
2. If there are some performance problems,simply return it in its original condition within 30 days of receiving it.In the warranty period,we will repair and ship you an good tester.
3.The warranty period will be extended for three months after we repair the bad products.
4. Postage fee paid by buyer.
5. Please note that the guarantee policy does not apply to.
1) Products has man-made damage or accidental damage such as excessive voltage applied to the input,high temperature,water damage drop and break,mechanical damage and corrosion.
2) Destroy the label of the products.
3) The warranty period or maintenance period has expired.
If you need to customize the product, we can also meet your requirements.
The customer has made the 12V DC input, and also has the 50VDC output.
Please contact us .We can ODM/OEM if you need.
PACKAGE INCLUDE:
1x Tester
1x 20A Tester probe
1x Power line
Circuit Breaker Finders
Circuit Breaker Finders
Circuit Breaker Finders
| Brand Name | TKDMR |
|---|---|
| is_customized | Yes |
| Operating Temperature | -20-50 |
| Accuracy Class | 0.1 |
| Model Number | TD-2B |
| Measuring Range | 0-300V |
41 reviews for LED Lamp Bead and Backlight Tester
Only logged in customers who have purchased this product may leave a review.
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D***n –
Delivery, packed, quality is excellent. I’m happy, thank you to the store! Seller recommend!
M***i –
Works perfectly, ras
J***I –
I arrive in 2 days. It’s going very well.
A***a –
The order came in a lot! Delivery by courier to the door of the apartment from Hong Kong for a month on the average Ural, about a week lay at customs, which greatly increased the delivery time! The store is excellent recommend, coped with the order well! P.S. for the seller: please before putting the tester in the box, wrap it with shockproof film with navel! As soon as I connect to the network I’ll show the tester in the case…
S***s –
all good not tested yet
Customer –
Thank you, the big store works well!!
L***n –
good product
P***Y –
fast shipping. thanks
M*** –
good quality working well
G***I –
To Kiev region In 18 days, Nova Potta. The goods are very high quality. Cool probes. When turned on shows 300 V, not afraid of K. Z., measures any LEDs! The store recommends-5 points.
D***o –
The package arrived whole. The tester matches the description. The voltage grows plano, which is very convenient. As described in a short circuit, the voltage drops to zero. Quality probes. I recommend.
D***I –
Excellent quality I thank the store and recommend it
Customer –
Good tester, overpole protection and KZ works, smooth start (15-30ma), 30mA current limitation, delivery 3 weeks to the Samara region
A***o –
The product is as described, it is very easy to use and very useful. Save time checking TVs with retro LED lighting
M***y –
Thank you store product as described. Packing good I recommend this seller
B***k –
Order: 2020-10-12 Arrival: 2020-10-30 Usually the shipping when minimal 뽁 뽁 even once cold arthur send modern day This product is just product paper box for just with plastic packaging as. Intact sent… Product box more squished, arrived in the fortunately now product is not seem. Think more product size is small and lightweight four. On/off switch according to the. EU plug was ordered. EU plug and US plug slightly thin road but Infant Toys still seems more small and thin four. Original used the universal adapter Deb to belly Ado, other EU plus he write tourn made only a This product is also Deb connection correct baggy harness EE The other way to be used with seemed …. Big problem is not ^^
S***y –
Great unit! Great store! 11.11 ordered 13. 11from me. I advise everyone
M***s –
Ok liuks
M***n –
Producted was quickly shipped and in working condition. Looking forward to be using it in a forthcoming LCD LED-panel repair. (Product not tested, just powered on)
M***n –
All is well, build quality is excellent, delivery courier to the door
O***n –
Came in 2 days delivery IML. Normal instrument, cost a little more than 1000R. Very flexible in work. The lines from the TV were not at hand, but it easily lights the LEDs one by one and shows the voltage drop. Good Pike in the kit. I was pleased.
J***n –
It needs to be proven and I hope it works well
A***v –
Works fine.
F***a –
muy rápido … eficaz … exelente.
E***z –
Excellent device thanks a lot vededor
Customer –
Very good quality. Take 2 months to arrival.
J***O –
Days only came in and it works well.
E***a –
Ottimo prodotto!!!Funziona bene! Confezionato accuratamente!!! Consegnato prima dei tempi previsti!!! Bravo il venditore!!! Grazie mille!!!
N***v –
Fast delivery, all according to the description. The block works, everything is super. Seller recommend. Thanks +++ 5
F***a –
Came exactly by the book (saying popular Brazilian) And recommend the store. As the product is same excellent quality and delivers what it promises.
D***o –
The tester is made qualitatively. In the kit there are excellent probes. Delivery to Petropavlovsk-Kamchatsky in 12 days. I’m happy with the purchase, I recommend the store.
V***o –
I ordered this miracle device for repairing LED bulbs and in general I am satisfied with the purchase. With the check of LEDs, he copes perfectly! There’s really one “but”. Despite the assurances of the store/manufacturer for the presence of protection against overthrow, if you confuse a plus with a minus on the LED, then there is a chance that you will burn it. I, checking it, burned so 2 LEDs. A quick touch will not do anything to him, but if you hold a couple of seconds, then the LED is the end. But I know it now and am careful.
E***z –
Excellent as I expected Thanks a lot to the store and the best came just time before the deadline I recommend this shop seemed very punctual and responsible.
J***a –
perfecto todo lo recomiendo muchas gracias y seguiré comprando aquí
C***c –
As description excellent good delivery time
D***r –
Fast delivery! I have am 04 July This product ordered and have it at 18. July in Germany. Well packed! Goods as described! the tester works flawlessly!
V***e –
Product as description. Tested ok working as expected. Very useful device in any laboratory to determine precisely the working voltage of any LED. Good quality Reccomend.
C***s –
excellent service very good store
L***u –
-Separate orders. June days arrival. Test is still wont saw but well received. Shipping is good looks to be.
E***y –
Everything works.
M***o –
Everything as indicated in the publication, very happy with the purchase, works excellent, super fast shipping a little over a week by Aliexpress shipping. Thank you