Kenwood ts 850s displayboard

Discussion in 'Radio Circuits, Repair & Performance' started by KM4YTW, Nov 21, 2020.

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  1. KM4YTW

    KM4YTW Ham Member QRZ Page

    Does anyone have or know where I can get a clear trace diagram of the display board. I need to see the trace routing .I had the usal leaking caps. Got that fixed but I still have something messed up with it.
  2. G4COE

    G4COE Ham Member QRZ Page

    Worth keeping in mind leaking caps. the stuff can get under components especially IC's and it play's havoc with plated through holes. I check these with a continuity tester I built, anything less than 12 Ohms it bleeps.

  3. KM4YTW

    KM4YTW Ham Member QRZ Page

    I got it. It's really amazing at how a trace can look good but is corrupt. I found the trace going from the + side the cap to the little transformer on the display board..
    Thanks Dave for the reply. I'm liking this 850 sat already.
  4. KD0RCB

    KD0RCB Ham Member QRZ Page

    KD0CAC likes this.
  5. KD0CAC

    KD0CAC Ham Member QRZ Page

    Had a similar problem with one of my displays , scrapped off the conformal coating soldered on a jumper wire and recoated .
  6. KM4YTW

    KM4YTW Ham Member QRZ Page

    Thanks fellows. I'm not sure if my display is as bright as it should be. It dims fine .

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