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About The Digital Transistor Tester

By on May 21, 2010


duoyi digital transistor tester dy294

After 17 days of waiting, the tester that i ordered finally arrived from Hong Kong. The tester name is called Duoyi DY294 Digital Transistor Tester and it is made in China. I have not tested the product yet and will let you know the review by next week (after my training course). At the moment, you can take a view from the video below:



  1. beh

    May 21, 2010 at 1:25 pm


    i am very happy you got this transistor checker i am waiting for your
    test results . and then i will ask you question


  2. John Preher

    May 21, 2010 at 3:03 pm

    That looks really well built. It is bigger than I expected, but that's OK. Hopefully the test review goes well. I want to order one of these possibly for my shop.

  3. admin

    May 21, 2010 at 8:31 pm

    Hi Guys,

    Hope to get good result from this tester. Will let you all know by next week.


  4. Andi Sapli

    May 22, 2010 at 6:16 pm

    Dear Jestine,

    I am very happy to hear you bought one and I also buy one and I received it on 21/5/10.I am waiting for your test result,actually I am not familiar with this tester and the DC parameter of the components to be tested.Hope you can give us a good tips about that.Recently I bought one used oscilloscope Hitachi 20 Mhz from my friend and he is expert in repairing all kind of testing equipments such as scope,anylyser,frequency counter etc, I bought it for RM200.00. Is this scope suitable for TV repair as its spec is only 20 Mhz. Thanks

  5. admin

    May 23, 2010 at 1:27 am

    HI Andi,

    I hope i have the time to analyze the meter because next week i have repair course On. Most probably after the course i will test it out. As for the scope RM200 is cheap and it is just nice to view certain waveforms.


  6. Sam C

    May 25, 2010 at 3:58 pm

    Please check if this tester is suitable for testing in-circuit components. My DY294 (version 3) is couple years old and I get inconclusive results. It might need to run at high frequency and low current for in-circuit testing. I built a $10 ESR meter that operates at 50KHz and 0.05VAC and it works great with in-circuit capacitors (unless a coil a parallel to the capacitor).

    Mine did not come with test leads and I made a set of homemake test probe.

  7. admin

    May 25, 2010 at 7:55 pm

    Hi Sam,

    I hope i have the time to fully test it by Thursday because at the moment I'm conducting a repair course till Wednesday. Friday is my Church Family day,Saturday and Sunday i will be going to Port Dickson to celebrate my birthday and wedding anniversary. However, next week I'm fully free and i guess it should be the best time for me to really test out this meter.



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