.
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 |
| Model Number | TD2B |
| Voltage | 0-300V |
25 reviews for LED Lamp Bead and Backlight Tester no Need Disassemble LCD Screen All LED Strips Lights Repair Test Output 0-300V
Only logged in customers who have purchased this product may leave a review.
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A***n –
Thanks
J***H –
one of the fastest arrivals I’ve received this year. thanks store. I’m waiting for the led lights to arrive to that I’ll test it and give you feedback.
I***v –
Delivery fast! Shups are horrendous. The tester is very heated at the time of use. Everything works in the ass
C***a –
It’s pretty good.
A***v –
Нормуль, пользуемся больше года, взяли про запас. Есть тумблер отключения.
A***v –
Normule, we use more than a year, we took about the stock. There’s a toggle switch.
J***o –
Fast shipping normal work satisfaction
R***r –
Delivery to Peter IML less than a week, with packing well, in photo 1 220 V, on the second ribbon
A***v –
The device as in the description. The probes are of good quality, the noses are thin, which is very convenient. Packed in a Crown box. The top is a little damaged, but the device is whole. Works, checked. Seller recommend!!!
J***a –
El envio llegó en el tiempo estimado, excelente vendedor, todo funciona igual a la descripción. Feliz con esta útil herramienta.
D***a –
I get in with the wrong on/off Switch not turn off but everything else works fine
M***a –
Excellent product, as described in the publication, very satisfied. Timely dispatch by the store.
O***v –
The store processed and sent the order quickly. However, because of the carrier, the order in a week returned back to the seller. Order status was sent off. Wrote to the seller. He replied quickly, apologized, wrote that it was not necessary to worry, would send again by another carrier. The seller is sociable. Track number was tracked. The parcel went a little longer than a month to the Kaliningrad region. Packed in simple plastic bag. The corner of one box crumpled, but all the contents as a whole and serviceable state. I recommend the seller, I order the second time.
C***n –
impeccable, reçu entre 2 et 3 semaines, bien emballé, testé et fonctionnelle Je recommande ce vendeur…. Good purchase !!
P***a –
The TKDMR LED Lamp Bead and Backlight Tester is very good quality.I am very pleased and thanks him . I recommend this store.
G***r –
very happy with purchase.
L***n –
llegó todo en muy buenas condiciones
E***v –
Norms, like working…
Customer –
I am very satisfied with the led tester at first glance everything is fine, as soon as I try it I will leave additional comment. The product description was accurate. The store shipped the item very quickly. I am very satisfied with the seller’s communication. ✨
V***j –
Quickly, quickly and qualitatively. Seller respect.
A***k –
At full power did not check, N
Y***o –
Fully corresponds to the description.
R***v –
Tester came all works perfectly store recommend track tracked
D***n –
Corresponds to the description. Everything works.
E***v –
посылка дошла до Хабаровска за две недели.Прибор отличный.Рекомендую.