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Acer al718 lcd monitor will not power on

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    #1

    Acer al718 lcd monitor will not power on

    Hi all, This my first time on this forum. I have faulty monitor which i brought off craiglist and will not turn on. I heard capacitors are normally the culprit, so i have opened the monitor to take out PSU for display. I labeled some parts i think could be problem along with area for my own disableming of psu. Any help would be appreciated. thanks in advance.


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    #2
    Re: Acer al718 lcd monitor will not power on

    Try this: https://www.badcaps.net/forum/showth...ighlight=al718

    Comment

      #3
      Re: Acer al718 lcd monitor will not power on

      Originally posted by roycar71 View Post
      Hi all, This my first time on this forum. I have faulty monitor which i brought off craiglist and will not turn on. I heard capacitors are normally the culprit, so i have opened the monitor to take out PSU for display. I labeled some parts i think could be problem along with area for my own disableming of psu. Any help would be appreciated. thanks in advance.


      In the future, please don't post pictures inline. Use 'Manage Attachments' below the text entry area.

      You have a serious problem. The upper inverter transformer is fried. You would probably find the two transistors next to it are shorted, and there is a third (probably on the back) that is also shorted. Of course, all caps should be replaced with Panasonic FR, FM, or FC series. The transistors and caps would be cheap. I'm not sure about finding a replacement transformer. I'd say you would be better off looking for a new power supply.

      PlainBill
      For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

      Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

      Comment

        #4
        Re: Acer al718 lcd monitor will not power on

        Originally posted by kbrletic View Post
        Try this: https://www.badcaps.net/forum/showth...ighlight=al718
        I saw this thread and i have it saved as a reference, but as PlainBill said, "I have serious problem". I might need more than just cap replacement. thanks.

        Comment

          #5
          Re: Acer al718 lcd monitor will not power on

          Originally posted by PlainBill View Post
          In the future, please don't post pictures inline. Use 'Manage Attachments' below the text entry area.

          You have a serious problem. The upper inverter transformer is fried. You would probably find the two transistors next to it are shorted, and there is a third (probably on the back) that is also shorted. Of course, all caps should be replaced with Panasonic FR, FM, or FC series. The transistors and caps would be cheap. I'm not sure about finding a replacement transformer. I'd say you would be better off looking for a new power supply.

          PlainBill
          Currently I am googling to find a psu and compenent replacement. Do you know of any well know electronic stores that might have components that i need for this project?

          Comment

            #6
            Re: Acer al718 lcd monitor will not power on

            For component replacement, if you live in the USA, you have mouser.com and digikey.com to choose from. Digikey shipments arrive usually within 48 hours and shipping is around $2.75 USD.
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            If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

            We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

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            Comment

              #7
              Re: Acer al718 lcd monitor will not power on

              Originally posted by retiredcaps View Post
              For component replacement, if you live in the USA, you have mouser.com and digikey.com to choose from. Digikey shipments arrive usually within 48 hours and shipping is around $2.75 USD.
              I will make note of using pictures in attachments. I will looking at these sites to see what components i can replace and post what i will do next to solve this problem. Thanks for reply.
              Last edited by roycar71; 03-27-2011, 08:31 PM.

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                #8
                Re: Acer al718 lcd monitor will not power on

                I did a little research and I couldn't find that board (ADP-42AF) being sold anywhere. Even your Acer AL718 model didn't have a single one being auctioned on eBay. I was hoping to find you one for parts or repair. The inverter transformer is going to be the tough one to replace. You might try an ad in "Looking to buy" thread out here. Maybe you'll get lucky and somebody will have a spare board with that inverter transformer lying around. Other than that, just search for recycled LCD monitors for parts or repair. Good luck.

                L-J-7

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                  #9
                  Re: Acer al718 lcd monitor will not power on

                  Originally posted by Lumberjack777 View Post
                  I did a little research and I couldn't find that board (ADP-42AF) being sold anywhere. Even your Acer AL718 model didn't have a single one being auctioned on eBay. I was hoping to find you one for parts or repair. The inverter transformer is going to be the tough one to replace. You might try an ad in "Looking to buy" thread out here. Maybe you'll get lucky and somebody will have a spare board with that inverter transformer lying around. Other than that, just search for recycled LCD monitors for parts or repair. Good luck.

                  L-J-7
                  I will desolder inverter transformer off board and post part no. info that i find on here and googling to see if i find it somewhere. Thanks.
                  Last edited by roycar71; 03-27-2011, 09:20 PM.

                  Comment

                    #10
                    Re: Acer al718 lcd monitor will not power on

                    So far, I have desolder transformer. Here is part no. 2801969500. It also has DCWM0371(05)YQ also.
                    Attached Files

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