Vizio sv470m

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  • rryall
    RRon
    • Jun 2016
    • 3
    • USA

    #1

    Vizio sv470m

    Hello...All, Hope someone can help.

    Standby "vizio" stays orange. Screen dark. No info with flashlight test.
    Purchased used main board that has been "tested". Installed used board.
    Now the back light comes on but still no picture. I believe the power board is fine. Now looking at t-con board. The fuse on the t-con has no power with the old main board or recently purchased board. It seems to me that the t-con board needs some kind of power. Power must be furnished from the main board to f1. I guess it's possible both main boards are defective. All the Voltage regulators are within specifications. (I think). Hate to buy new t-con, if the problem is on the main boards. How can I test?

    Thanks, RRon
  • ozzy214
    Badcaps Veteran
    • Nov 2013
    • 319
    • usa

    #2
    Re: Vizio sv470m

    Should be 12v on each side of fuse. If 12v going back to main board is missing, then probaly bad main. Make sure wires are not broken.

    Comment

    • rryall
      RRon
      • Jun 2016
      • 3
      • USA

      #3
      Re: Vizio sv470m

      Thanks, I wondered which voltage should be there 12v or 5v. Will check cables

      Comment

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