Question about Audiovox FPE1708 17 in. LCD TV

4 Answers

I have a 17 inch audiovox LCD that has power but the screen is dark, no picture. Need help as soon as possible

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  • ivan_rolle Aug 02, 2009

    I have a audiovox 17in lcd tv with power but no picture. I checked the inverter board but need more help in determing if the board if faulty.

  • ivan_rolle Aug 02, 2009

    The audiovox lcd 17inch has no picture but the tv has power. The tv has an internal problem. I checked the inverter board. How do i know if the board is faulty.

  • ivan_rolle Aug 02, 2009

    I have a audiovox 17 lcd tv, with power but the screen is dark with no picture. I checked the inverter board but need help to deetermined if the board is bad.

  • ivan_rolle Aug 02, 2009

    I have a audiovox 17 lcd tv, with power but the screen is dark with no picture. I checked the inverter board but need help to deetermined if the board is bad.

  • ivan_rolle Aug 02, 2009

    I would have to check for hv out put. Thanks! This is the best advise i have gotton. I will let you know.

  • ivan_rolle Aug 03, 2009

    Thanks guy one of the inverter SMPS transformer was defective. Will try and get a new inverter board from shop jimmy.

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4 Answers

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  • Master
  • 6,966 Answers

Hi and welcome to Fixya,

Offhand, without a schematic diagram or a service manual, checking the inverter would be relatively difficult. A few things to consider:

  • the inverter is supplied with DC voltage;
  • as the name implies, its function is to invert the DC and produce high voltage, high frequency ACV to in turn supply the CCF lamps (cold cathode florescent);
  • if only a multitester is available (preferably an analog needle type meter), test for the presence of this high frequency, high voltage at the output of the inverter;
  • the output would at the SMPS style mini transformer;
  • depending on the model/version, there could be 1 or 2 of this transformers;
  • since this is high voltage, safety precautions must be kept in mind when performing tests on live equipment;
  • it must be mentioned that some inverters have a soft off trigger for video muting;
  • in some instances, fault could be as simple as a cold solder or a dried / leaked capacitor.
Good luck and thank you for asking FixYa.

Posted on Aug 02, 2009

  • Louie  Role
    Louie Role Aug 02, 2009

    Is there any high voltage output?

  • Louie  Role
    Louie Role Aug 03, 2009

    Again, pls be careful when checking for the presence / absence of the HV output.  In some versions, there would be some sort of shielding that is over the HV area.

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  • Master
  • 32,281 Answers

Plug another monitor to the computer to determine it the video card is OK, If you see a normal image then the fault is the 17" LCD.
If you view the LCD at a sharp angle and you can see a dim image the the CCFL lamp or inverter in the LCD is faulty.
For spares, service and DIY info. check out LCD Parts WEB site.
Use this link:-
www.lcdparts.net

Posted on Aug 03, 2009

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  • Master
  • 4,924 Answers

When the screen is dark for no reason usually the cable is to blame ...just double check the cable to be well plugged also you may change it ..maybe its faulty ...install the driver cause it might be some issues of compatibility involved..if you know it that it worked well on this system ..it may be something related with the image driver ( video card driver) you might been messing around with the color registry from control panel and now it came up black after restart .. in this case there is almost nothing that you can do ..but restore it to an earlier point after boot from CD ..or try to reinstall the whole pc ...by the way ,,,this is an idea boot from cd ..to see if you have any image on it ..just like you reinstall it ...
you can also ..try to see from its settings maybe its messed from the manual settings on it ...just press auto set if it has such thing
let me know how it came out ...

Posted on Aug 02, 2009

  • Catalin Turcu
    Catalin Turcu Aug 02, 2009

    sorry I was under the impression that you were talking' about a pc.monitor....if its about a lcd tv ..I can not help ..

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  • Audiovox Master
  • 19,396 Answers

To start check the video cable, and test the monitornconnecting it to a different computer if possible.

Try also unplugging the monitor from power for thirty minutes, that will reset the internal circuits.

If still no luck, then there is an internal fault.

If there is no picture, and the unit does not appear to be in standby , or with the led blinking (protection), then the problem is usually the inverter board.
Sometimes when is the inverter you can see a faint picture by pointing a torchlight near to the display with a 45 degree angle.

If the led is blinking, or unit stays in standby , then there is a internal fault.
In that case it can also be the inverter, but PSU and controller board must be tested before replacing the inverter.

You can find parts at: Audiovox Parts | ShopJimmy.

Regards

Posted on Aug 02, 2009

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Posted on Jan 02, 2017

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