King KX-155 help..

Discussion in 'Avionics and Upgrades' started by Randy Stuart, Oct 2, 2022.

  1. Randy Stuart

    Randy Stuart Filing Flight Plan

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    Idaho Maule
    Anyone have experience trouble shooting a KX155 installation for Nav?? I have a 155 installed in a Maule I bought last year that the nav doesn't seem to be working right. It's connected to a Century HSI with G/S that works fine when switched to GPS. Ok, when I dial in a VOR I hear a nice clear morris code but the HSI does nothing and when I pull the bearing knob it shows "---". I tried a friends 155 and I get the same. I changed the diplexer and I get the same. I've tried 2 different VOR stations in my area with the same results. Any suggestions....
     
  2. Tom J

    Tom J Filing Flight Plan

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    Tom J
    With the decommissioning of VOR stations, I would consider asking your avionics shop to test the system with a ground VOR tester. Only takes 15 minutes to go through all the heading and deflections to verify your set up. With 2 radios doing the same thing, look at the wiring.
     
  3. Skip Miller

    Skip Miller Final Approach PoA Supporter

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    Samuel Finley Breeze MORSE takes exception to your spelling!
     
  4. camorton

    camorton Pre-takeoff checklist

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    Craig Morton
    What switch are you using? Could be a broken or misconnected wire, or a problem internal to the switch. Download a copy of the KX155 install manual and you'll see it includes sample wiring diagrams for connecting to CDI and HSI. Get something to test continuity and start with that.

    C.
     
  5. bbchien

    bbchien Touchdown! Greaser!

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    Bruce C