X7 Phenom electronics issue

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  • HiatusSmiatus
    Rockin and Cockin
    • May 2025
    • 61
    • KC

    #1

    X7 Phenom electronics issue

    Howdy everybody,
    Ive got an X7 phenom im having issues with. When on semi auto it doesnt fire. It works fine in full auto, and switches off when on safe, but nothing happens when on semi. Ive tried to do the usual troubleshooting stuff, wiggled the selector to see if its just a little misaligned, made sure there no loose connections, checked the board programming, etc. I cant find a diagram of the board or anything online to help. It looks like theres 2 hall sensors (or something like them) tripped by the trigger assembly. Im thinking theres one for full auto and one for semi, and the one for semi is bad.

    My questions to the great experts here are: Does anybody have any familiarity with this issue and how to resolve it? Does anyone know which sensor is which and if they are for each mode or one is fire and one is safe? How do I separate the board and components from the plastic enclosure without damaging them, do I have to desolder the capacitor or am I missing something?
  • Magmoormaster
    Only here for the zipline
    • Jul 2020
    • 1294
    • Glendale, AZ

    #2
    I can't say much but I will say this; semi auto on a phenom is mechanical; it does not use the board at all. So it's a totally different issue.

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    • HiatusSmiatus
      Rockin and Cockin
      • May 2025
      • 61
      • KC

      #3
      Well, that is super helpful. If its mechanical, then the issue has to be the trigger assembly not contacting the pin enough. Either the pin is too short or the trigger needs to travel further. Thank you, you saved me from all the electronics troubleshooting lol.

      Comment

      • RhoXi
        Blowback Enthusiast
        • Nov 2024
        • 210
        • Cincynasty

        #4
        You may have already gotten this ironed out but I figured I'd share. If the Phenom is like the Crossover, the mech part needs more trigger travel to work and it is possible to set it short enough for the electronics to work but not the mech. One of the many quirks of the design.
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        • HiatusSmiatus
          HiatusSmiatus commented
          Editing a comment
          Yep, that was the issue. I got it adjusted and now its working.
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