Question about Toshiba REGZA 42RV530U 42 in. LCD HDTV

3 Answers

L have a toshiba lcd tv 42rv530u with normal sound ,black screen

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  • dvpierre330 Sep 08, 2010

    rylee l know about the circuitry, l just want to make sure, l was changed the master inverter board that doent change any thing ther is 2 fuses one on each board master and slave it keep on blowing those fuses

  • dvpierre330 Sep 09, 2010

    do l have to change both boards the master and the slave after testing

  • dvpierre330 Sep 18, 2010

    l have been changed the inverter boards, nothing change the screen still black and l read 24 volt from the inverter boards no sign of high voltage in the inverter boards to light up the back light l need your advice what to do next

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3 Answers

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  • Master
  • 4,889 Answers

Do you have a dull glow on the screen when its turned on? IF yes then you have a dead t-con board and replacing it should resolve the issue. If you have no glow at all then your backlight inverter has failed. In that case you should replace the inverter board to solve this problem. In any case this problem should not run you more than 150$ if you want to do it yourself. let me know if this is the case so that I can help you with the repair.

Posted on Sep 09, 2010

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  • Toshiba Master
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Hi.

IF TV has sound but screen is completely dark, then the inverter is not firing up. Before replacing the inverter, PSU and main board must also be tested.

Here an article on the problem.

Here how to test the inverter.

Posted on Sep 08, 2010

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  • Master
  • 8,619 Answers

Hi


Thanks for using FixYa. Hope you already know that this cannot be corrected through the MENU options. To resolve this issue you?ll have to open the back of the unit and check the inverter board which is the power supply source for the backlights. The issue can be a bad inverter board and/or the inverter board is not getting 20vdc from the power supply maybe due to the connector that has gone bad/loose.All this is only recommended to be done by someone who has electrical expertise and knows about the internal circuitry of the unit. Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Sep 07, 2010

  • Rylee Smith
    Rylee Smith Sep 08, 2010

    Check the voltage going to the board.

  • Rylee Smith
    Rylee Smith Sep 09, 2010

    If the voltage appears to be fine then check both the boards and replace the one that has gone bad.

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