17" LCD Monitor goes black after 15 min. on  time

Posted on 2006-05-06
Last Modified: 2012-08-13
I have a 17" LCD monitor. It works fine for about 15 minutes then goes black. Does this sound like a back light inverter problem? How can I troubleshoot this issue. I have replaced LCD screens that were cracked but have not done much else on the monitors. Thanks for any help!
Question by:atf3doc
    LVL 70

    Expert Comment

    I presume you are using the monitor during this time -- i.e. that this is not a simple case of the power options on the PC turning off the display after 15 minutes :-)

    ... assuming that, then Yes, this certainly sounds like an inverter issue.   Not much else I can think of that could be shutting down after heating up for 15 minutes.   If you're able to direct airflow to the inverter (depends on the specific display), try that and see if that changes the behavior (e.g. lengthens the time until it shuts down).
    LVL 44

    Expert Comment

    Right  click on desktop, properties, screen saver, powerbutton, and set everything to never. Click apply and then reboot.  If the problem persists, go into the Settings - Advanced - Monitor Tab (same menu as first I mentioned) and make the monitor a windows default, namely 1024x 768 superVGA.  Also while here, set the refresh rate to 60 hertz (you are just doing this for stability, you can up it later) - save all settings and reboot.  If none of this works, the monitor itself has a capacitor overload and will eventualy burn out.
    LVL 1

    Expert Comment

    Have a look in your Bios i think that there might be some ECO freindly setting upsetting your monitor....

    Also if you switch your monitor off and on again does it come back on?

    Author Comment

    This problem has nothing to do with computer settings. Another monitor works fine. Does anyone have instructions for opening up a Compaq FP7317 LCD Monitor. I have the top half of the bezel off but I can't seem to get the bottom loose.
    I have remove two screws from the bottom back.
    LVL 70

    Accepted Solution

    I agree this has nothing to do with the settings -- as I noted above, this is almost certainly an inverter issue.   I can't find any reference to a service document on HP's site -- they don't make it easy for those of us who like to do our own repairs to find detailed tech data.   I've had SOME success at getting help with these kind of details by sending e-mails to tech support, but it seems to depend on just who answers the e-mail  (you'll often just get referred to a service center).


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