Acer LCD Monitor Repair- 22 Inch AL2216W

By on August 24, 2016
how to repair acer lcd monitor mainboard

 

 

 

 

 

 

 

 

 

A few months ago my brother in The Hague called me up to ask me advice on how to repair his Acer 22 inch PC LCD Monitor with the model of AL2216W. I told him to look inside on the Power and HV board for bulged Electrolytic Capacitors.




He had opened his monitor to look but didn’t trust his solder experience. So recently I got his Monitor to have a look myself and see why it wouldn’t start. See the Box Label photo below:

acer lcd monitor repair

lcd monitor acer

Before both Power/HV Board and Video Board can be reached I used my terrific Wera WE-013400495 SW 5/230mm T-Handle Hexagon Wrench to remove the VGA/DVI Connector Bolts quickly and easy. As can be seen on previous photos:

how to repair acer lcd monitor

acer lcd monitor circuit board

acer lcd monitor main board

acer lcd monitor power supply inverter board

On previous photos the 2 Bulged Capacitors were easily noticed. Both were 220uF 25V. I replaced them by two 220uF 50V types. Below the bad bulged capacitors after removing.

bad capacitors

acer lcd monitor repairing

After both Capacitors on the Power and HV Board were replaced I tested the Acer LCD Monitor and everything worked splendidly again. Because my brother lives about 172 Km from my hometown Weert, I have to wait until he or one of my other brother or sisters have the time to come to get the like new working Monitor.

An easy repair which often is all about just replacing the bulged capacitors on the Power/HV Board. Until another repair, hopefully more interesting.

albert1

Albert van Bemmelen, Weert, The Netherlands.




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Note: You can read his previous repair article in the below link:

http://jestineyong.com/laptop-power-supply-repair/

http://jestineyong.com/how-to-repair-lcd-monitor-flicker-hp2509m/

 

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39 Comments

  1. Parasuraman

    August 24, 2016 at 1:37 pm

    Good job!

    Likes(1)Dislikes(0)
  2. Luciano Khware

    August 24, 2016 at 2:43 pm

    Mr Albert,
    Nice, short and straight to the point repair article. Thanks for sharing

    Likes(1)Dislikes(0)
  3. Yogesh Panchal

    August 24, 2016 at 3:41 pm

    Good Job! Albert.

    Likes(1)Dislikes(0)
  4. Anthony

    August 24, 2016 at 4:42 pm

    Hi Albert, to make the job more interesting for faults like these...maybe try soldering with your opposite hand. That should test your concentration some ! Thanks for sharing your stories here.

    Kind Regards

    Likes(0)Dislikes(1)
    • Albert van Bemmelen

      August 24, 2016 at 9:44 pm

      Hi Anthony. You're very Funny. I just had to Laugh when I read your reply!
      It is certainly as interesting as trying to wipe our Butt with our other hand. I am sure I can't do that either. (LOL!).

      Likes(1)Dislikes(0)
      • Anthony

        August 25, 2016 at 3:56 am

        Glad you liked the comment Albert! Also I really enjoyed your Oscilloscope repair from a few months ago! You and the other technicians who share their repair stories here are very talented and real geniuses in how you diagnose and repair problems with equipment! I always learn a lot when I read your articles! Thanks again
        Kind regards

        Likes(2)Dislikes(0)
        • Albert van Bemmelen

          August 25, 2016 at 5:49 pm

          Glad you liked those articles Anthony. I hope it helped you by choosing a good Oscilloscope. I didn't know how easy it was to repair these fantastic (but about 30 years old) Tektronix Oscilloscopes. But I am sure glad these work like a charm after repair. And as said still are worth using today because of the >350 MHz triggering they support! Ideal for HF circuit checks. And thanks to reading Robert's (from Texas) Tektronix article I got interested in buying these myself too.

          Likes(1)Dislikes(0)
  5. Anwar Shiekh

    August 24, 2016 at 8:26 pm

    I am normally very careful not to up the voltage on replacement capacitors as this means a higher ESR (equivalent series resistance) and so the replacements run hotter and don't last as long. I have seen this when rebuilding a Mac power supply, and after a couple of years I needed to replace them again; this time with units of the correct voltage (using samxon in both cases).

    Likes(2)Dislikes(1)
  6. Anwar Shiekh

    August 24, 2016 at 8:33 pm

    Higher voltage means higher ESR and the replacements will not last so long as they run hotter.

    Likes(1)Dislikes(1)
  7. Albert van Bemmelen

    August 24, 2016 at 9:50 pm

    I understand what you say Anwar. But I already replaced the Capacitors more than once and since a couple of years ago. The this way repaired Monitors still work fine! Besides the fact that practical new Monitors get this complaint maybe tells something about the poor way the Power Circuits themselves are constructed?

    Likes(1)Dislikes(0)
    • Albert van Bemmelen

      August 25, 2016 at 12:17 am

      Or the original used Capacitors were of a bad quality to begin with?
      (As a comparison I take the example when I just had bought a new Bike and in less than a year all gear/cogwheels needed to be replaced. And now more than 10 years later the replacement wheels are still fine! Which tells us something of the bad quality of the coqwheels that the Manufacturer had originally used).
      Anyhow placing higher voltage Capacitors into the Board reduces the chance they explode by sudden occurring higher voltage peaks in the Power Lines.

      Likes(1)Dislikes(0)
  8. beh

    August 24, 2016 at 11:34 pm

    yes. you did this like any others and is splendid & thanks

    Likes(2)Dislikes(0)
  9. Tito Kanshulu

    August 25, 2016 at 4:43 am

    Good job Albert,and well explained. Keep the fire burning.

    Likes(2)Dislikes(0)
  10. MontyAbdo

    August 25, 2016 at 5:13 pm

    Thanks Albert
    good information, Bless you

    Likes(2)Dislikes(0)
    • Albert van Bemmelen

      August 28, 2016 at 4:10 am

      Thank you MontyAbdo. Bless you too!

      Likes(0)Dislikes(0)
  11. suranga bandara, Suranga Electronics

    August 25, 2016 at 6:38 pm

    hi. Mr-Albert,

    The quick trouble shooting.
    Good Job.

    Likes(2)Dislikes(0)
    • Albert van Bemmelen

      August 28, 2016 at 4:20 am

      Thank you Mr. Suranga!
      In the meamwhile I have send the repaired Monitor with the cheap Kiala Post Service to The Hague to my Brother. It is about 50% cheaper than other Post Services. And also operates in other European Countries. It takes up to about 4 days to be recieved in my Country, and 3-4 extra to other Eiropean Countries. (I need the space at home now because of replacement of Wooden Window Frames by new plastic ones that will start soon).

      Likes(1)Dislikes(0)
  12. Humberto

    August 25, 2016 at 10:58 pm

    Hi Albert, an easy repair ( as you say at the end of your article); but remember one thing: another device saved from the dump. Congratulations.

    Likes(3)Dislikes(0)
    • Albert van Bemmelen

      August 28, 2016 at 3:47 am

      Very true Humberto. It sure would be a real waste to throw a further
      perfectly good working Monitor away just because of some bad bulging
      Capacitors. And I enjoy helping others by fixing their expensive stuff.
      Which is never about money in the first place.

      Likes(2)Dislikes(0)
  13. mahmoud_tajpour

    August 26, 2016 at 2:10 am

    HI Albert good repair bless you.

    Likes(2)Dislikes(0)
    • Albert van Bemmelen

      August 28, 2016 at 3:48 am

      Thank you mahmoud. Glad you liked the repair. Bless you too !

      Likes(0)Dislikes(0)
  14. Andre Gopee

    August 26, 2016 at 7:31 am

    Thanks for shating your articl Mr. Albert.

    Likes(0)Dislikes(0)
    • Albert van Bemmelen

      August 28, 2016 at 4:04 am

      Although shating exists as a verb I take it you were not asking me about that Andre? And the t was really meant to be an r.
      Or you were saying it in relation to one of the funny Posts above in reply to that of Anthony's? Cheers! (LOL).

      Likes(0)Dislikes(0)
  15. reza

    August 26, 2016 at 2:26 pm

    Hi Albert
    Good Job !

    Likes(1)Dislikes(0)
  16. Robert Calk

    August 26, 2016 at 3:16 pm

    Good job, Albert.

    Likes(2)Dislikes(0)
    • Albert van Bemmelen

      August 28, 2016 at 3:36 am

      Hi Robert, I hope you didn't give up on Electronics as we haven't read
      much of you for some time now? And I still am glad having read your
      Tektronix article about the great Tektronix Oscilloscopes we now both
      share. Also a friend of mine bought one because of the info you gave.
      They still do work great after all those years. Although I recently
      had to move much of my expensive stuff out of the way because they are
      going to replace all my apartment old rotten wooden window frames any day
      now which takes up a lot of space inside. So I can't do much now until
      every device is back in place.

      Likes(0)Dislikes(0)
      • Robert Calk

        August 28, 2016 at 11:26 am

        Hi Albert,
        No, I haven't given up. I'm just a hobbyist anyway. Lately I've been learning my new hobby, leatherworking. Right now I'm working on a shoulder holster for a revolver. Nobody has had any devices that need fixing except for a pair of teenage mutant ninja turtle walkie-talkies that my great nieces play with. I didn't think they were worth writing an article about. We will be moving into a new home in a couple of weeks. So maybe in a few weeks after we get settled in I will have something to write an article about.
        I'm glad you guys are enjoying your Tektronix scopes! My scope is still working great as well.

        Likes(0)Dislikes(0)
        • Albert van Bemmelen

          August 29, 2016 at 12:27 am

          Glad to hear you are doing okay Robert! I've read about people who were busy with Leatherworking on Instructables. I guess you need a special Sewing machine for that. Like
          the one Shoemakers use? Sometimes I find interesting articles on Instructables
          concerning Electronics projects there too.

          Likes(0)Dislikes(0)
        • Robert Calk

          September 2, 2016 at 6:34 pm

          Thanks Albert. I would need a leather sewing machine if I were trying to make money at it, but I just sew by hand. Since my back is messed up, I just do a little here and there. I just have my hobbies to give me something to tinker with because I can't stand to watch TV and play video games all day.

          Likes(0)Dislikes(0)
          • Albert van Bemmelen

            September 22, 2016 at 3:23 pm

            I understand how you feel Robert. I had severe Back problems in the past very long years too until my Chiropractor helped me to get almost completely get rid of it. And I like playing a videogame occasional too, but it must have been for over 2 years now that I last played the Xbox360 game DEUS EX-Human Revolution (it is a terrific game but level PICUS BOSS is too damn hard!! Although I read how to beat that level, I still couldn't do it which is a shame because it keeps me from continuing this great game). In the meantime repairs keep me busy just like writing about them.

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  17. Bulent NUR

    August 27, 2016 at 7:49 pm

    Fault is smiling - good job thanks for sharing.

    Likes(2)Dislikes(0)
    • Bulent NUR

      August 28, 2016 at 4:04 pm

      Im not use hexagon wrench, I use pliers (loosen) and after philips screwdriwer continue ...

      Likes(2)Dislikes(0)
  18. Henrique Jorge Guimarães Ulbrich

    August 28, 2016 at 6:32 am

    Dear Albert, good and quick job. Congratulations.
    However, I am curious about your T-Handle Hexagon Wrench. Why do you call it's terrific?

    Likes(2)Dislikes(0)
    • Albert van Bemmelen

      August 28, 2016 at 6:31 pm

      Just because it is so much easier to screw those hexagon Bolts with it
      Henrique. It saves time and time is money as they say. And using plain old Pliers can damage the Bolts. You do not need a special T-Handle Hegagon
      Wrench, but that is the only one I could find at the local store.

      Likes(0)Dislikes(0)
      • Henrique Jorge Guimarães Ulbrich

        August 29, 2016 at 5:12 am

        That's right, Albert. I also have one and I know that it's very handy. From now on, I'll call it as being terrific, too.

        Likes(1)Dislikes(0)
        • Albert van Bemmelen

          August 31, 2016 at 10:55 pm

          I like your positive attitude Henrique!
          Cheers.

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  19. Albert van Bemmelen

    August 28, 2016 at 6:31 pm

    I meant Hexagon of course.

    Likes(0)Dislikes(0)
  20. Om Arya

    August 30, 2016 at 2:20 am

    Good job Albert. Well explained and eazy repair. But a quick question does anyone know what could be the problem in my BenQ g2420hd it shows some weird colour bleeding can d shows weird cartoonish colour patches on some parts like top right of the panel recently, no other problems the panel fires up and works except for the colour issues at some places in some parts of the panel as i have already mentioned above. It's over 3 yrs old. Does anyone know what could possibly be the problem. Much appreciated if someone could give me some pointers to what may be causing the problem in my LCD panel lately. Sorry for the long and tiresome post, thanks in advance.

    Likes(1)Dislikes(0)
    • Albert van Bemmelen

      October 1, 2016 at 4:00 am

      Sorry for my late reply Om Arya. Since this was my older article I didn't notice. I would suggest to buy one of Kent Liew's recent repair E-books on LCD repair. If I'm correct there was a free edition about all sorts of LCD screen problems added to Volume 3. Maybe Jestine can advice you if it still is available with that extra volume on LCD added? Including how LCDs were manufactured that could help you solve your question. Repairing bad LC displays is always tricky and mostly ends in replacing them by a new one if the problem is not the Backlight. The type number of any LCD can be found at the back of it on a sticker. I hope this answer does help in solving your problem.

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