🔴 HP 3406A Sampling Voltmeter Repair - No.1233

Ғылым және технология

HP 3406A Broadband Sampling Voltmeter Repair
I do some repairs and diagnosis of a HP3406A sampling volt meter which requires fixing.
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Boonton
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4220.
8210: defs.link/?u=e1eddc
Datron
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Siglent
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SDS1104X-E.
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SDS2104 X Plus.
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UNI-T UTi260B Thermal Imager: defs.link/?u=f3283d7 (use discount code: BG45411)
KSGER T12 Soldering Iron: defs.link/?u=620ace defs.link/?u=5c112e
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Heathkit IT-12 Signal Tracer.
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Valhalla 2703: defs.link/?u=06bcfc
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Eakins Microscope: defs.link/?u=b0278b defs.link/?u=262327
Mustool G600: defs.link/?u=b8bc26 defs.link/?u=33f0aa
Uni-T UT210E: defs.link/?u=391ce3 defs.link/?u=ea4edc
DER DE-5000: defs.link/?u=0d9160 defs.link/?u=12d498
MK-328: defs.link/?u=0d9160 defs.link/?u=739ee7
MESR-100: defs.link/?u=0d9160 defs.link/?u=009419
ESR Meter: defs.link/?u=0d9160
HOPI: defs.link/?u=7fab55
PeakMeter PM6252: defs.link/?u=59ef66
HS1010: defs.link/?u=10c699

Пікірлер: 13

  • @erikisberg3886
    @erikisberg38863 ай бұрын

    An old friend of mine, SM6ECR , used to repair these way back, The fault was almost always in the sampling bridge circuit. I still have one of these and use it sometimes.

  • @abdoolgafoor670
    @abdoolgafoor6703 ай бұрын

    When build quality is a work of art 💯

  • @Edisson.
    @Edisson.3 ай бұрын

    Hi, the meter looks very well preserved, I absolutely hate these self-repairing defects. I had random outages on one machine, but once I started to figure out where the problem was it started working normally, I couldn't find it. It worked perfectly normally for a week and then started to get angry again, this happened several times, I found it more or less by accident, one diode had a burnt terminal inside the case, during the measurement I wanted to break the circuit and this diode, which I measured and looked normal, I desoldered on one side and the moment I lifted it above the PCB, it stayed in my hand. Nice day 🙂Tom

  • @hallpet45
    @hallpet453 ай бұрын

    Great vid.. There's just something about cases,I luv..All the holes,in frame...Keep it up

  • @eeknud
    @eeknud2 ай бұрын

    At 2:xx try AC coupling

  • @craxd1
    @craxd13 ай бұрын

    Check the solder joints on the main boards.

  • @jspencerg
    @jspencerg3 ай бұрын

    So it goes with vintage gear. Put it together, pick it up, put it down, and finally, most importantly, plan on needing it. That's when it'll stop working again. I'm still wondering if the keithley 228 will reappear.

  • @ivolol
    @ivolol3 ай бұрын

    Reflow all the solder joints 🤣

  • @JurassicJenkins
    @JurassicJenkins3 ай бұрын

    Check diode D14

  • @noggin73
    @noggin734 ай бұрын

    Nice. I'm supprised HP were doing hand routing in 1986. Dry join somewhere?

  • @IanScottJohnston

    @IanScottJohnston

    3 ай бұрын

    Yep, Wintek's SmartWork (I remember it well!) came out in 1984, so Cad work was well underway. However, delving into the 3406A back story I found a datasheet for it dated Aug. 1966, and a manual 1967......which explains things.

  • @KB1UIF
    @KB1UIF3 ай бұрын

    You need a bigger hammer to hit it with !!!

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