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Help with ts440s vfo dial problem

Discussion in 'Radio Circuits, Repair & Performance' started by VK2FJ, Jun 20, 2009.

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  1. VK2FJ

    VK2FJ Ham Member QRZ Page

    Hi Guys and gals, I have got a problem with my TS440s in that when I rotate the VFO dial the frequency only goes up... It also goes up when I turn in the reverse direction. But when I use the up and down buttons on the mike it works ok.. Any ideas where to start looking...


  2. W2VW

    W2VW Ham Member QRZ Page

    Probably the shaft encoder.

    People regularly part these radios out and sell the stuff on ebay.
  3. W9GB

    W9GB Ham Member QRZ Page

    Yes, it sounds like a dirty or fault shaft encoder (could be corrosion on the encoder plug to PC board).

    I believe that rotary encoder is still available from Kenwood Parts.
    Good Kenwood techs (Avvid) are available to address this, check your memory coin cell battery and the audio amp capacitor.

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