Question about JVC HD-52FA97 HDTV

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HAS SOUND VIDEO INTERMITTEN - JVC HD-52FA97 HDTV

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  • vonnehka Mar 21, 2011

    REPLACE LAMP YEAR AGO.HAS SOUND VIDEO INTEMITTEN LOOKING AT pc BROAD SRA1024A.

  • vonnehka Mar 22, 2011

    I have raster when video goes out I dont have menu deplay I eyeball pc broad SRA1024A.but i have sound

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  • JVC Master
  • 19,396 Answers

Hi.

At user level, the only thing you can do is ensuring that the problem is not given by a defective video cable or by a connected device. The TV is more likely faulty, and must be disassembled and repaired by a technician.

There are different parts to be tested. If you get intermittent picture , and TV does not go to forced standby (protect mode).

Test using different connected devices (eg. tuner and external DVD or console). IF problem is only with one device, then it may depend on the device.
If the problem occurrs using internal DVD or VCR, then the problem is the internal player.

Do a test by opening a menu on TV, and see if the loss of video affects the on screen display. If the on screen display stays there, then problem is digital video (main digital board), terminal board or circuits (inputs), or if connected straight to antenna, tuner board.

More commonly the loss of raster include the OSD, and you get a completely dark screen.

In that case most common failures are power board and drive power board supplying the lamp (often called ballast).

Testing is done monitoring voltage to the lamp while problem happens and testing voltage line from power board to lamp. The PSU supplies lamp on 12V DC line.

The full service manual have been uploaded here:Click here to start download..

If that does not work use this (same upload):http://www.mediafire.com/?t51c8y8ead3xka3

Regards.

Ginko.

Posted on Mar 21, 2011

  • Ginko
    Ginko Mar 22, 2011

    Hi.

    See if you can enter service mode, as described in page 36 of service manual.

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  • Master
  • 4,889 Answers

These are tell-tale signs of a failing lamp. Eventually you will end up with a no picture but sound problem and the lamp LED at the front blinking. Replace the lamp to resolve the problem

Posted on Mar 21, 2011

  • eagle338
    eagle338 Mar 21, 2011

    There is no rule that the lamp should not die in 1 year's time. Remove the back cover and check the status of the lamp when the picture goes out. Let me know what you found. We will also test the lamp driver to confirm whether its the source of the problem

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Posted on Jan 02, 2017

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