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I have a Sharp LCD TV that is not quite 2 years old. Last night, while watching, the set turned itself off and the green power button kept flashing. I read that someone else had this problem, and tried the solution offered. It said to hold the volume up and the channel down and plug it in. It was then supposed to come on in service mode so I could correct the lamp error. It stopped the power button from flashing and now the sound is working properly, but not the picture. Any other advise to get my picture back?

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  • 1222brian Jun 02, 2010

    There was no image with a flashlight

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If the tv is showing a channel in the corner I am wondering how it could be a back light issue?

You need to check the Tuner/decoder board is where you need to look for your fault as if you can see something on the screen like a channel number then there is obvious display/raster you just need to check the tuner.decoder boards in this tv, Let me know before you vote thanks

Posted on Jul 14, 2010

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  • Master
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Hi


Thanks for using FixYa. As you have already tried the reset procedure so to check what has gone bad you’ll have to open the back of the unit and check the backlight inverter board. The inverter is the power supply source for the backlights. If that’s the issue then it’s always better to replace the inverter board completely just to avoid any future issues. If not then check the power supply board however, it seems to be the inverter board as the sound is still working fine.Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Jun 02, 2010

  • Rylee Smith
    Rylee Smith Jun 02, 2010

    That means it is the inverter board that needs to be replaced.

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  • Master
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Hi,
TV is turned On in service mode and protection is set to off by that procedure.
Now point flash light on its screen and observe any faint image in screen, this will confirm that back light inverter board is not producing back light to show lcd picture.
Replace back light inverter board to solve the issue.
Let me know if you have additional question.
Thanks.

Posted on Jun 02, 2010

  • Shahid Electronics
    Shahid Electronics Jun 02, 2010

    ok, no image with flash light.
    That shows problem with video processing circuit (main board)
    Do you see any on-screen display or menu?




  • 1222brian Jun 02, 2010

    When I turn the TV on, the screen shows a blue box in the corner that says what channel it is on, but otherwise no menu or anything comes up.

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