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LG W2442PA LCD monitor flickers when cold

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    #1

    LG W2442PA LCD monitor flickers when cold

    Hello,

    I have a strange problem with LG W2442PA LCD monitor - it is working fine, but if you leave the PC to switch off the monitor into power saving mode and you leave it like that for some 3-4 minutes (enough for the monitor to cool down), and then you wake it up - the monitor will flicker (just like 60Hz on CRT) for 15-20 sec. and then will return back to normal operation. The same can be reproduced if you simply turn off the display by using the on/off switch on the monitor for some 3-4 minutes after it heated up.

    It would never flicker when being used intensively (i.e. if you not let it enter in power saving mode to cool down or turn it off manually for some time and).

    Please advise!

    Thanks in advance for your time spent!
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    #2
    Re: LG W2442PA LCD monitor flickers when cold

    Anybody?

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      #3
      Re: LG W2442PA LCD monitor flickers when cold

      Well this is just a guess, but it seems to me that the large primary cap is bad. When the monitor is cold, it has a very low capacitance, which is causing the 60Hz mains frequency to interfere with the DC output of the power supply. As it warms up it's capacitance goes back up and then the mains frequency is blocked properly.
      It could easily be something else though....
      Crack it open and take some pictures for us, and then people will be able to help you better.

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        #4
        Re: LG W2442PA LCD monitor flickers when cold

        is the screen pink or orange till it warms up?

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          #5
          Re: LG W2442PA LCD monitor flickers when cold

          Originally posted by kc8adu
          is the screen pink or orange till it warms up?
          No, there are no other issues except for the flicker...

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            #6
            Re: LG W2442PA LCD monitor flickers when cold

            Open it up to get a visible check on caps
            A couple of pictures if possible will help if its not the caps

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