• EEVblog #628 – Tektronix 213 Vintage Portable Oscilloscope Teardown

    What’s inside a 1975 vintage Tektronix 213 portable oscilloscope/DMM combo?
    Warranty VOID if NOT Removed T-Shirt
    Forum HERE

    Spec sheet

    Trigger Chip
    Decade Counter Chip

    High Res photos:

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      • Hi Dave I´m the guy how make the mods in the service manual.
        If you want the original copy please give me your email and I will send you the original.

        Best regards and thanks for your videos.


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      • Paul

        Hope you put it all back together, and it’s a keeper in your lab.

      • richnormand

        Hi Dave,

        noticed that Tek213 unit on your top bench shelve from a quite a while back.

        Nice tear-down, hope it will reassemble OK. These where quite coveted at that time and a nice package/function engineering example.

        I have a similar Tek unit. The 305 Sony-Tektronix. Similar concept with DMM and two channels. I replaced the Ni-Cd batteries as I find it quite useful when I need to have a floating measurement.

        Keep up the good work. I really enjoyed the ceramic capacitor video as well as the microphone series.



      • Johm

        The NEC 741 chip in the PWR Supply board says: ‘POZIBE’. I bet it was crowdfunded.

      • Chris

        In regards to size, I am curious just how much you could shrink it if you opted to go with all SMD.

      • Larry

        The vertical board pins were probably staked likewise the IC’s and TO-92 packages which would be appropriate still for early 70’s. (Never saw plug in To-92’s before)

        I was a manufacturing engineer for Motorola 2-way in 73 and watching the ladies on the staking machines installing pins and eyelets was amazing.

      • Fred


      • Great video dav, brings back a lot of memories I had a leader LBO 325, dual channel compact o-scope and loved it when I was a student, It worked just as well as the big ones. I thougth it ran on 12 volts as well, can’t remeber. I still look for them on ebay, if ones at the right price I getting it. I left mine at my old company I worked for,they needed it more that I did (small mom and pop repair place).

      • Wonderful teardown video! I’m particularly impressed with your enthusiasm in appreciating the engineering behind the product. I have a similar Tek (221 model) and I do love its performance and form factor.

        Keep up the good work in terms of sharing your thoughts and experiences with electronics and test gear!

      • Carlos

        This is a piece of beauty. Please keep it working.

        This is worth a museum

      • Xavier

        Hi Dave. Excellent site. I have one Tek 213 with battery problem. I cant fix the problem. Do you know anybody in Spain could repair the 213?
        Thanks in advance.
        Xavier – Barcelona. Spain.

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