Vertex VXR-7000U Repair help

Discussion in 'Radio Circuits, Repair & Performance' started by K5IWL, Jun 3, 2019.

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  1. K5IWL

    K5IWL Ham Member QRZ Page

    Sorry if this is not the correct forum for this. Our club repeater Vertex VXR-7000U, just quit working. Whenever someone keys, it powers the unit off and then back on. (Thinking it's a built-in power supply issue). The setup is: repeater directly to commercial power, back has a T-connector on the TX side with one side to ground the other to the antenna. It has been on the air for several years. (Even before I arrived 3 years ago).

    I contacted both and Larsen and they both said they don't or can't repair it. One even said it wouldn't be worth repairing. Unit powers on and stays on. When someone keys the repeater, it "power cycles."

    Our hope is that someone here has a suggestion. We are a very small club in SW Oklahoma, with limited funds.

    Any help would be appreciated.

  2. KA5IPF

    KA5IPF Ham Member QRZ Page

    It sounds like the power supply voltage is dropping under load. Measure the dc voltage at the power supply and see what is happening. If ok keep going to the tx itself. It could be a bad DC fuse or crimped connection.
    Last edited: Jun 4, 2019
  3. K5IWL

    K5IWL Ham Member QRZ Page

    Thanks for the input. That is what we were thinking too. We're going to run a few tests tomorrow. Will post reply with updates!

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