Question about Sharp LL173C 17" Flat Panel LCD Monitor

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Power button won't turn off monitor

The button acts normal and clicks but nothing happens. Been advised to clean control panel circuit or replace the tact switch? How do I clean the control panel circuit? and what is a tact switch? Also the Adjust lock will not come off.....

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  • Anonymous Nov 10, 2007

    I'm having the same issue, except i can't turn mine on. I noticed the monitor turning off every few seconds and coming back on, like it was possessed. I turned it off and now it won't come back on.

  • Anonymous Dec 01, 2007

    What's up with these flat panel monitors? I have 2 with the same problem... One is a BenQ and the other is an Acer. Both are just over a year old. Maybe the meantime between failure is kicking in already?.....

  • babemama Jan 08, 2009

    my monitor's power button won't work. every time i press it it shows a box saying "power button locked*
    help please.


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We have the same problem our computor went on the blink for a while and we put more memory in the computor and now the monitor wont turn off with the button if anyone has a solution to this could they pleas tell me thanks

Posted on Aug 18, 2010

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Well, I noticed this after I installed win xp sp3. My monitor won't turn offwhen I click the button. I have to set my power setting to a certain timeframe then require a relogin but the monitor just won't turn off otherwise.

Posted on Mar 22, 2008

  • waz-up Apr 10, 2008

    I uninstalled WinXP sp3 and my monitor button works now. So check and see if your auto update installed xp sp3. Hope this helps you also.

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Power button won't turn monitor off?


ok,your monitor is in  a very simple problem.clean the control panel circuit of your monitor,or if it is not working replace the tact switch in your monitor.

Oct 18, 2007 | Sharp LL173C 17" Flat Panel LCD Monitor

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