Toshiba 42HL67US Back light issue

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • CraigR
    Badcaps Veteran
    • Dec 2013
    • 959
    • USA

    #1

    Toshiba 42HL67US Back light issue

    Toshiba 42HL67US amber light when plugged in then hit the power button and light turns green and panel light flashes twice slowly then stays out. I have checked the voltages on the power board and there is no BL_ON it's just marked with the voltages next to the plug or ground. I do have the voltages marked and a couple maybe a volt higher. I also took a test bulb and went around and tested every inverter and they all lit the bulb the same. Also did a visual check for swollen caps or anything that might have got hot and nothing.Not sure now.
    Attached Files
  • CraigR
    Badcaps Veteran
    • Dec 2013
    • 959
    • USA

    #2
    Re: Toshiba 42HL67US Back light issue

    Anybody??

    Comment

    • CraigR
      Badcaps Veteran
      • Dec 2013
      • 959
      • USA

      #3
      Re: Toshiba 42HL67US Back light issue

      Could someone tell me how to test the inverter boards?

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: Toshiba 42HL67US Back light issue

        So you do have 24VDC at all 6 fuses on the master inverter board but no BL_ON voltage?
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

        • CraigR
          Badcaps Veteran
          • Dec 2013
          • 959
          • USA

          #5
          Re: Toshiba 42HL67US Back light issue

          Yes 24v all 6 fuses on both sides. Nothing marked as BL_ON but I do have all the voltages as marked next to the plug.

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: Toshiba 42HL67US Back light issue

            So that means the main board is the problem at this point. I do not have the service manual for this model.
            Never stop learning
            Basic LCD TV and Monitor troubleshooting guides.
            http://www.badcaps.net/forum/showthr...956#post305956

            Voltage Regulator (LDO) testing:
            http://www.badcaps.net/forum/showthr...999#post300999

            Inverter testing using old CFL:
            http://www.badcaps.net/forum/showthr...er+testing+cfl

            Tear down pictures : Hit the ">" Show Albums and stories" on the left side
            http://s807.photobucket.com/user/budm/library/

            TV Factory reset codes listing:
            http://www.badcaps.net/forum/showthread.php?t=24809

            Comment

            • CraigR
              Badcaps Veteran
              • Dec 2013
              • 959
              • USA

              #7
              Re: Toshiba 42HL67US Back light issue

              The problem turned out to be a bad inverter on the master board. Not a main board.

              Comment

              Related Topics

              Collapse

              • Document Archive
                Toshiba Satellite Pro C660-1NQ Specification for Upgrade or Repair
                by Document Archive
                This specification for the Toshiba Satellite Pro C660-1NQ can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the C660-1NQ boardview and C660-1NQ schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Toshiba...
                09-06-2024, 05:27 AM
              • PNI E.
                tcl u65x9006 back light on but no picture sounf ok after 40 50 secs
                by PNI E.
                hi guys, i need your help again...i have tcl u65x9006. while i was watching it become darker like when a movie ends, little by little the image disappear. now if i turn on i have back light on, after like 1 min i have also sound but no picuture. the back light is on i take off one at time the ldvs but nothing change always no picture. i tried to cover with a piece of paper the pin of ldvs i cover like 7 8 pins but nothing worked. the tv stay with no picture. there is a tcon board.i checked the voltage there on the fuse i have 11,8 volts. there is caps in shorts on the exit of the tcon i have...
                02-20-2025, 08:36 AM
              • Document Archive
                Toshiba Satellite L655-19C Notebook Specification for Upgrade or Repair
                by Document Archive
                This specification for the Toshiba Satellite L655-19C Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the L655-19C boardview and L655-19C schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Toshiba...
                09-06-2024, 05:59 AM
              • Document Archive
                Toshiba Satellite L635-10K Notebook Specification for Upgrade or Repair
                by Document Archive
                This specification for the Toshiba Satellite L635-10K Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the L635-10K boardview and L635-10K schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Toshiba...
                09-06-2024, 05:59 AM
              • Document Archive
                Toshiba Satellite L655-1DJ Notebook Specification for Upgrade or Repair
                by Document Archive
                This specification for the Toshiba Satellite L655-1DJ Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the L655-1DJ boardview and L655-1DJ schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Toshiba...
                09-06-2024, 05:59 AM
              • Loading...
              • No more items.
              Working...