Toshiba 23HLV97 - No Pic/CCFL/Sound

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  • crashp3
    Senior Member
    • Mar 2011
    • 81

    #1

    Toshiba 23HLV97 - No Pic/CCFL/Sound

    Hey All:

    Long story short, previous owner stated they heard a "bang" and that was it. Elektrotanya has the SM for the set.

    I pulled it apart, two possible suspect caps on the power board. One is leaning and slightly domed, and the huge one when running finger across is slightly domed in dead center.

    So Far:

    1) Red light (standby) goes to green as if it's working, no sound, no picture, no backlights. Unit has an integrated DVD player, sometimes after power disconnect, I can insert a cd and "play" it, but other times I can't, as if it's dead. (don't care about the dvd, but found it odd that it works sometimes, and not others - manual says to check voltage going to the drive, even when it doesn't work, the correct voltage is present).

    2) Can't see a picture with a flashlight.

    3) Test voltages from power supply to mainboard, they are all within spec.

    4) Tore apart to the TCON and inverter, no visible signs of damage to any of those components. all cables secured.

    5) Once the set is on (green light), I can't get it back into "standby" mode, as if I'm "powering it off".

    6) During one power on attempt, the LCD flashed completely white (CCFls also came on)and immediately went off - this was barely a second. Since then, after ~50 power cycles, I've yet to see any other life from the LCD.

    Any help is appreciated! Can take additional pics if needed.
    Attached Files
    Last edited by crashp3; 07-31-2013, 06:25 PM.
  • crashp3
    Senior Member
    • Mar 2011
    • 81

    #2
    Re: Toshiba 23HLV97 - No Pic/CCFL/Sound

    Well, as "luck" would have it, while typing this post, I had the set sitting plugged in, but not on (standby mode).

    After typing, I went to the TV, hit the power button, the screen illuminated white (with CCFL), white screen went away after approximately a second and the CCFLs stayed on.

    Attempted to play a DVD (only source I would know for sure worked), and the drive was definitely spinning, but no sound and picture other than the CCFLs.

    Unplugged the TV, immediately plugged it back in, tried to power on again, light went green, but no CCFL or flash of white.

    I'm Lost

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