Kenwood TS-140S

Discussion in 'Radio Circuits, Repair & Performance' started by VE1XYZ, Feb 8, 2005.

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  1. VE1XYZ

    VE1XYZ Ham Member QRZ Page

    I recently purchased a used Kenwood TS-140S that does not transmit. When the radio is keyed the "On Air" light comes on and I can hear a relay click inside the radio but the meter shows "0" output power even when the power is turned up to maximum. The radio receives fine. I was just wondering if anyone has had this problem with this model and if anyone has any idea what the problem could be?

    Thanks,
    VE1XYZ
    http://www.ve1xyz.net
     
  2. VE1IDX

    VE1IDX Ham Member QRZ Page

    Does it do that in all Modes? Check the power output control.Those rigs had a problem with the slide pots.Might be a bad relay inside.Could even be the finals but I doubt it.
     
  3. VE1XYZ

    VE1XYZ Ham Member QRZ Page

    Yes, it does this in all modes and on all bands. I will check the power slide pot and see if it is working properly.
    Thanks for the reply
    VE1XYZ
    http://www.ve1xyz.net
     
  4. VE1IDX

    VE1IDX Ham Member QRZ Page

    Some of the TS-140 rigs had a factory problem with the driver transistor not being mounted properly.Usually the problem showed up as intermittant but perhaps it has progressed beyond that. Click here for a fix.    


    Good luck.TS-140 power fix
     
  5. KC9EOG

    KC9EOG Ham Member QRZ Page

    That happened to mine once and after awhile I discovered that the send/receive button for cw was pushed to send. Hopefully it is something that simple.
     
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