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Review Of The Blue CCFL Tester

By on August 25, 2012

When I bought this Blue CCFL Tester (without any brand) about a month plus ago it does not have manual and box. Anyway it is quite straight forward to use this tester. For those who have bought this tester and have problem in using it then I hope this blog post could be a help to you. According to the seller webpage in EBay, this tester could test up to 1000mm backlight (about 39 inches backlight). This means this tester have no problem in testing the backlight of notebook, LCD Monitor or any other type of LCD panel that have less than 39” of backlight.

You need to know that when you order this tester it does not come with a power adapter. According to the spec, you need to use a 12 volt with 2 ampere DC adapter. If you have a 12 volt 3 ampere ac adapter you can use it too. Below are the photos with some explanation:

ccfl tester

ccfl tester

ccfl tester

ccfl tester circuit

ccfl tester board

ccfl tester mainboard

ccfl backlight tester

ccfl tester

Note: Be extra careful with the high voltage. 

ccfl tester connector

ccfl tester connector

Advantages of the CCFL Tester:

1)    Compact/Light/ Handy design

2)    Easy to use- Just power up the tester and measure across the two ends of the backlight. A good backlight will be very bright and a weak backlight will become reddish or does not light up at all.

3)    Cheap price (about USD14 to USD15.99) including shipping

Disadvantages of the CCFL Tester:

1)    You need to buy an external power ac adapter (12 volt 2 ampere) which can be costly. (Some power adapter could be more expensive than the CCFL tester itself)

2)    It can’t test if the backlight is slightly weak or dim unless if you have the two same type of backlights for comparison.

3)    It can’t test if the backlight has a very slight flickering problem

4)    It can only measure up to 39” backlight. If you repair LCD TVs then this backlight tester is not suitable for you. Nowadays it is very common to have LCD TVs that is more than 42”.

5)    You may need to buy separate connector for different type of backlight connector

Note: If you order from, I suggest that you email the owner if you want the tester to reach your place fast and secure. Of course you have to pay for the additional shipping charge. If you do not wish to pay the extra fees and continue to use the free shipping then you need to wait about 15 to 30 days for it to arrive.

Special notice: I do not endorse that you should use this CCFL Tester nor I’m affiliated with any of the ebay seller. This Blue CCFL Tester is not in anyway associated with the Blue ESR and Blue Ring Tester by Anatekcorp. This is just a review based on my own opinion. If you think that you want to buy this tester, then you have to take your own responsibility. Just visit and key in backlight tester. You will see many types of backlight tester. If you need any info about the backlight tester you need to sign up at and from there you can contact the seller for alternative payment and mode of shipping.

If you have any question about this post please feel free to comment-thanks.

Jestine Yong



  1. ko kyaw

    January 14, 2013 at 11:32 am

    hello jestine yong   i am pro tv repairer in myanmar.i have  so many panel problems. how can i solve these problem.for example , reddish picture,  double image , hor lines , ver lines and soon. so i need panel repair machine, i need more repair info about panel.

    • Jestine Yong

      January 14, 2013 at 8:55 pm

      Hi KO,

      Sorry no info on panel repair machine. I heard that it is very expensive and many repairer just ca't afford it. Usually panel repair is done by factory.


      • Ricardo Alfredo Diaz

        February 20, 2023 at 1:22 pm

        Hola señor se me quemaron los dos transitores que están al lado del capacitor cerámico no se cuáles son no se ven los códigos me podría decir q tipo de transitores son los códigos probador ccfl color azul desde Córdoba Argentina muchas gracias
        Hello sir, the two transistors that are next to the ceramic capacitor burned, I don't know which ones they are, the codes cannot be seen, could you tell me what type of transistors are the blue color ccfl tester codes from Córdoba Argentina, thank you very much

        • Jestine Yong

          February 24, 2023 at 10:54 am

          Hi Ricardo,
          Q1 is 8550S, Q2 is 8050SS , Q3 is D1816 and Q4 is D1816



    August 22, 2013 at 9:34 am


    • Jestine Yong

      August 22, 2013 at 9:45 pm

      HI Wakeel,

      Sorry I do not sell ccfl tester and you need to buy it from I'm selling only the blue esr meter at


  3. Tyree Hicks

    July 26, 2014 at 5:39 am

    I bought a blue ESR meter assembled it myself with no instruction but it didn't work. The meter had 2 possible way for 9volt battery connection the black & red hook up which is solder to the board or the metal slots plug in which one is correct? Thanks

    • Jestine Yong

      July 26, 2014 at 11:25 am

      Hi Tyree,

      It has to be soldered on the board. There is one + and one - hole.


  4. Ted

    December 30, 2014 at 4:33 am

    Need info on Visio hdmi repair

    • admin

      December 30, 2014 at 10:27 am

      HI Ted,

      Sorry no info on this.


  5. wills

    September 18, 2015 at 5:10 pm

    Hi Jestine Yong,
    can you please explain me about how the ccfl circuit is working?

    • Jestine Yong

      September 19, 2015 at 2:04 pm

      Hi Wills,

      There are already lots of websites on this. Just type in Google "How ccfl circuit works" and you will find lots of info there.


  6. michael

    November 6, 2017 at 12:26 pm

    hi sir im am in the philippines

    how much is the cost of blue esr tester,,
    and what i another function of that tester ..

    • Jestine Yong

      November 6, 2017 at 3:41 pm

      Hi Michael,

      You can check the cost and the shipping in the below link:

      The function of the meter can be read in the below link:



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