Toshiba 42HL67US

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  • NickLoC
    Senior Member
    • Jan 2013
    • 80
    • USA

    #1

    Toshiba 42HL67US

    Had no backlight on this tv. Could see picture with flash light. Getting required power to inverter boards. Replaced the boards and all works great. But I am now trying to find out what was wrong with the inverter boards. Saw some info that there may be a blown smd fuse. Checked them, sure enough the main fuse a smd code D, F1 on board is blown. Going to try replacing it. Question is what could cause it to go in the first place? From the info I found on-line, after most people replaced the fuse the TV was fine from then on.
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: Toshiba 42HL67US

    Can we see a picture of the failed fuse?
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • NickLoC
      Senior Member
      • Jan 2013
      • 80
      • USA

      #3
      Re: Toshiba 42HL67US

      Here it is. Primary fuse. There are other smaller ones on the board. This is the only one with no continuity. This is the Master board. Slave board all fuses are fine.
      Attached Files

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #4
        Re: Toshiba 42HL67US

        Seen it often. No apparent cause for it to blow, perhaps under-rated originally.
        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • NickLoC
          Senior Member
          • Jan 2013
          • 80
          • USA

          #5
          Re: Toshiba 42HL67US

          Thanks for the info. Ordered 10 fuses for $5. Cheap fix to have an extra set of boards or possibly eBay them

          Comment

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