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Thread: Speedotron black line repair info?

  1. #11
    SE Penna.
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    Re: Speedotron black line repair info?

    Got the unit reassembled and the strobe functions normally. Ordered a switch and replacement model bulbs. Hope to get it back in business when the parts arrive.

    It would be nice to install a new cable gland/grommet/strain relief as well, will look into the connections when the model lamp is installed. I think the connections are soldered.

  2. #12

    Re: Speedotron black line repair info?

    Congratulations !.......You're now a CERTIFIED SPEEDOTRON TECHNICIAN

  3. #13
    Peter De Smidt's Avatar
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    Re: Speedotron black line repair info?

    You beat me to it. Good job! I need to replace a modeling lamp switch myself.
    "Why can't we all just get along?" President Dale, Mars Attacks

  4. #14
    SE Penna.
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    Re: Speedotron black line repair info?

    Thanks guys. It is really quite straightforward, if you have intermediate electro-mechanical skills. The most difficult step relates to the thin metal can.

    - clearance between parts is tight due to compactness, and dust and grime makes things sticky and not easily removable.
    - the sheet metal can is thin and deforms easily, especially if it has been bent, dinged or dropped over the years, as mine has. This creates additional tightness in removing the innards.

    To overcome these points, wiggling and going slow will deliver success. I cleaned everything up and upon reassembly I had to squeeze the can/body in such a way that the innards could be inserted. Hard to explain, easier to show.

    When I get the replacement switch and new modeling bulb I will do a little sheet metal "adjustment" with a hammer and drift pin on the anvil of my vise. Hammer mechanics, unite!

    The guts of the flash unit come out all in one go, after 4 screws and the model lamp switch are disconnected.

  5. #15
    SE Penna.
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    Re: Speedotron black line repair info?

    Solved.

    Model lamp new bulb $12.68 at a local electrical supply house. Bulb: clear quartz tungsten halogen Sylvania 250Q/CL/CD(ESS) 250W 120V BA15D NAED 58720

    Model lamp new switch no cost at a (different) local electrical supply house. The gentleman at the counter said the switches are no longer available, but he had a box in stock from a showroom lighting display setup. Note: the switches are available online at Amazon and other places. Functional equivalent to Leviton 90679-1 single pole pushbutton push on push off 3A 125V. The ferrule/bushing protrudes a tad farther from the strobe body, not a big deal. Original knurled retaining nut can be reused. If I do another one of these I might go with a rotary switch as it requires less force on the strobe.

    The housing was massaged back into better shape with some blacksmithery skills, a hammer (of course) and a round flat drift punch. The fan blade no longer rubs on the can/housing and is the quietest of my 3 strobes.

    Strobe functions normally. Model lamp functions normally with both the switch on the power pack and the (new) switch on the strobe. All good.

  6. #16
    SE Penna.
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    Re: Speedotron black line repair info?

    Found the strain relief, can also be known as cable gland, ferrule, or bushing. These small plastic pieces make a secure connection where the power cable enters the metal housing of a 102 strobe light.

    Heyco part 1254, SR 8N-2 black. https://www.heyco.com/Strain_Relief_...elief_Bushings

    Easy to install. Pliers are needed. I used a pair of small adjustable pliers. We call them channel locks in the US. Other pliers would work, and Heyco sells a pair of specialist pliers for this job.

    With the new strain relief the cable is safer and looks much nicer.

  7. #17
    Peter De Smidt's Avatar
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    Re: Speedotron black line repair info?

    That's great! Thanks for letting us know.
    "Why can't we all just get along?" President Dale, Mars Attacks

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