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Acer AL1916 restarting (at a random time)

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    Acer AL1916 restarting (at a random time)

    I have received an LCD monitor AL1916, which works fine... until it restarts at a random point.

    Because it happens randomly, I have no idea where to start looking for the problem.

    Maybe somebody could point out which area could be problematic?
    Is it caused by controllerboard or powerboard?

    #2
    Re: Acer AL1916 restarting (at a random time)

    Define "restarts"
    Does it power off, and you have to push the power button?
    36 Monitors, 3 TVs, 4 Laptops, 1 motherboard, 1 Printer, 1 iMac, 2 hard drive docks and one IP Phone repaired so far....

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      #3
      Re: Acer AL1916 restarting (at a random time)

      It powers off and starts up by itself.

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        #4
        Re: Acer AL1916 restarting (at a random time)

        Most likely the power supply, quite likely caps.
        Post some photos, we'll have a look.
        I've done 4 1916s. 2 1916s 1 1916B and a 1916WA 3 were bad caps 1 was bad caps and a shorted FET.
        36 Monitors, 3 TVs, 4 Laptops, 1 motherboard, 1 Printer, 1 iMac, 2 hard drive docks and one IP Phone repaired so far....

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          #5
          Re: Acer AL1916 restarting (at a random time)

          I received this LCD a long time ago and at that moment I tried replacing caps but it did not help.
          I will open this LCD up again tomorrow and check what have I done there exactly.
          Maybe there is a bad solder or some leftover solder which may have an effect on it. I will check that.

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            #6
            Re: Acer AL1916 restarting (at a random time)

            715G1492-2 is the board in question.

            Most the caps have been replaced. Only 10uF 50V Elite (C908) and 4.7uF 50V KY (C209) + big cap have not been replaced.

            I did not find any bad soldering nor leftover solder.

            Transformers tested OK

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