Someone explain this? Emachines monitor

Collapse
X
Collapse
+ More Options
Posts
 
  • Time
  • Show
Clear All
new posts
  • caphair
    Badcaps Legend
    • Nov 2011
    • 1249

    #1

    Someone explain this? Emachines monitor

    Hi, everyone, first off Happy Turkey Day!

    So I have this weird phenomenon that's happened (weird unless there is an explanation I'm not aware of)

    My emachines e19t5w monitor one day stopped working. As I went to turn it on, it simply shut off within a second and since then nothing would happen unless you power cycled it yielding in same result: it'd attempt to power on and within a second or two shut off.

    Opened her up, and found just one bad bulging cap 470uf 25v. I replace it and still same problem existed. A friend who's more experienced with monitors suggests I replace all the remaining caps since some could be bad and not bulging, I had plenty of spares so I did. Again, same problem. He takes a look at it and notices some brown burnt stains on pcb where two small ic's are, he replaces them and the monitor works for a good hour before original problem returns.

    Determined (and to get some experience testing parts, voltage drops etc) I find some online tutorials and measure voltage to best of my knowledge. That was the last thing done, out of curiosity I decide to just plug one pair of back light wires and attempt power on, monitor shuts off even quicker than before.

    I notice the circuit board ground wasn't screwed in to the case (not sure if this even matters) so I fasten it and try again (with only one pair of backlight wires plugged in) the monitor turns on! and stays on. Confused now, I unplug from outlet and plug in the other pair of backlight wires, plug monitor in, turn on, and it has since then been working 100% perfectly. I'm using it now as I type. What's up with that? Anyone ever hear of this, know the explanation? Thanks!
    Last edited by caphair; 11-24-2011, 10:58 AM.
  • killian6pk
    Badcaps Veteran
    • Apr 2010
    • 502
    • USA

    #2
    Re: Someone explain this? Emachines monitor

    Can you tell who made your power supply board. Different manufacturers seem to constantly have the same problems. If you read about monitors with your power board on this forum you will probably see a pattern as to the problem. In your case it could have been something simple like one of the backlight wires not making a connection and when you removed them and put them back it took care of the problem. Might have also been the ground wire.
    Have you ever stopped to think and then forget to start thinking again?

    As a very wise man once said on this forum: "Of all the things I have lost I miss my mind the most."

    Comment

    • caphair
      Badcaps Legend
      • Nov 2011
      • 1249

      #3
      Re: Someone explain this? Emachines monitor

      Originally posted by killian6pk
      Can you tell who made your power supply board. Different manufacturers seem to constantly have the same problems. If you read about monitors with your power board on this forum you will probably see a pattern as to the problem. In your case it could have been something simple like one of the backlight wires not making a connection and when you removed them and put them back it took care of the problem. Might have also been the ground wire.
      Hmm didn't notice who the manufacturer is, but in terms of maybe the backlight connections were not making good connection, don't think that's the case as I've many a times tried powering on and off after taking power supply out for inspection.

      Comment

      • caphair
        Badcaps Legend
        • Nov 2011
        • 1249

        #4
        Re: Someone explain this? Emachines monitor

        Here's a picture of the same power supply in the monitor that I found online (This is not the actual one inside my monitor. Mine only had one bulging cap - the single one upper right next to heat sink)

        Comment

        • Scenic
          o.O
          • Sep 2007
          • 2642
          • Germany

          #5
          Re: Someone explain this? Emachines monitor

          looks a lot like the mirage electronics inverter/PSU board found in cheapo Proview monitors

          like this one out of a Proview 900W
          https://www.badcaps.net/forum/attach...6&d=1215867099

          Comment

          • Agent24
            I see dead caps
            • Oct 2007
            • 4939
            • New Zealand

            #6
            Re: Someone explain this? Emachines monitor

            What brand\series were there originally and what did you replace them with?
            "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
            -David VanHorn

            Comment

            • caphair
              Badcaps Legend
              • Nov 2011
              • 1249

              #7
              Re: Someone explain this? Emachines monitor

              Originally posted by Agent24
              What brand\series were there originally and what did you replace them with?
              Are you asking about the capacitors?

              Comment

              • Agent24
                I see dead caps
                • Oct 2007
                • 4939
                • New Zealand

                #8
                Re: Someone explain this? Emachines monitor

                Yes, although I guess it doesn't matter since you got it going now?

                But if you are using less than reputable brands it won't help.
                "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                -David VanHorn

                Comment

                • caphair
                  Badcaps Legend
                  • Nov 2011
                  • 1249

                  #9
                  Re: Someone explain this? Emachines monitor

                  Well I'm more so curious as to why it suddenly started working after curiously powering it on with just one of the back lamps plugged in. Before that it'd just power on for a second and shut itself off. Even after replacing the caps

                  Comment

                  • Agent24
                    I see dead caps
                    • Oct 2007
                    • 4939
                    • New Zealand

                    #10
                    Re: Someone explain this? Emachines monitor

                    Maybe an intermittent faulty inverter, and the fault was temporarily suppressed somehow by only connecting one lamp...

                    Basically, I have no idea, sorry. But someone else should be able to help...
                    "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                    -David VanHorn

                    Comment

                    • caphair
                      Badcaps Legend
                      • Nov 2011
                      • 1249

                      #11
                      Re: Someone explain this? Emachines monitor

                      So, this monitor just shut off on me and is back to original problem where it turns on for a second until the screen displays "emachines" then instantly shuts off, even power led light goes off.

                      Pressing power button does nothing, you have to power cycle it and then aforementioned issue happens. Any suggestions?

                      Comment

                      • PCBONEZ
                        Grumpy Old Fart
                        • Aug 2005
                        • 10661
                        • USA

                        #12
                        Re: Someone explain this? Emachines monitor

                        Yes, replace ALL the caps this time.
                        Also use low ESR caps.
                        .
                        Mann-Made Global Warming.
                        - We should be more concerned about the Intellectual Climate.

                        -
                        Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.

                        - Dr Seuss
                        -
                        You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                        -

                        Comment

                        • caphair
                          Badcaps Legend
                          • Nov 2011
                          • 1249

                          #13
                          Re: Someone explain this? Emachines monitor

                          Originally posted by PCBONEZ
                          Yes, replace ALL the caps this time.
                          Also use low ESR caps.
                          .
                          All the caps were replaced the first time. Well all electrolytic capacitors were replaced, and only on PSU board.
                          Last edited by caphair; 12-08-2011, 07:46 PM.

                          Comment

                          • mockingbird
                            Badcaps Legend
                            • Dec 2008
                            • 5484
                            • -

                            #14
                            Re: Someone explain this? Emachines monitor

                            Replace them with GOOD replacements this time.

                            Comment

                            • caphair
                              Badcaps Legend
                              • Nov 2011
                              • 1249

                              #15
                              Re: Someone explain this? Emachines monitor

                              Originally posted by mockingbird
                              Replace them with GOOD replacements this time.
                              Ok but even initially after I had replaced them all, I still had the same problem. The monitor then started working after I (after being somewhat stumped and curious) connected only one of the backlights in and powered on. Then powering off and connecting both in, monitor started working until today, original problem again.

                              Comment

                              • mockingbird
                                Badcaps Legend
                                • Dec 2008
                                • 5484
                                • -

                                #16
                                Re: Someone explain this? Emachines monitor

                                Can you tell me what you had before, and what you replaced them with?

                                Brand, Series, Dimensions please.

                                Comment

                                • caphair
                                  Badcaps Legend
                                  • Nov 2011
                                  • 1249

                                  #17
                                  Re: Someone explain this? Emachines monitor

                                  Originals were Samxon and they were replaced with a kit for my particular model from lcdalternatives.com which say they use primarily Panasonic caps. Only marking I can see on them is a letter M inside a box, they're black and gold colored casings. Dimensions are perfect match to the originals.

                                  Comment

                                  • PlainBill
                                    Badcaps Legend
                                    • Feb 2009
                                    • 7034
                                    • USA

                                    #18
                                    Re: Someone explain this? Emachines monitor

                                    Originally posted by caphair
                                    Originals were Samxon and they were replaced with a kit for my particular model from lcdalternatives.com which say they use primarily Panasonic caps. Only marking I can see on them is a letter M inside a box, they're black and gold colored casings. Dimensions are perfect match to the originals.
                                    There should be a two letter code on the same side as the temperature rating. What is it? And a picture of the top of the caps would be appreciated.

                                    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

                                    • shovenose
                                      Send Doge Memes
                                      • Aug 2010
                                      • 6575
                                      • USA

                                      #19
                                      Re: Someone explain this? Emachines monitor

                                      Originally posted by caphair
                                      Only marking I can see on them is a letter M inside a box, they're black and gold colored casings.
                                      [M]=Matsushita=Panasonic. If they're legit, then they're very high quality capacitors.

                                      Comment

                                      • caphair
                                        Badcaps Legend
                                        • Nov 2011
                                        • 1249

                                        #20
                                        Re: Someone explain this? Emachines monitor

                                        Originally posted by PlainBill
                                        There should be a two letter code on the same side as the temperature rating. What is it? And a picture of the top of the caps would be appreciated.

                                        PlainBill
                                        I'll have to check the two letter code tomorrow but I had taken a pic of top of board (although with cell phone for now)
                                        Attached Files

                                        Comment

                                        Related Topics

                                        Collapse

                                        • momaka
                                          HannStar Hanns-G HC194d LCD monitor repair
                                          by momaka
                                          Normally, I never post repairs this quick after I do them, because… I am usually very slow. But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
                                          03-15-2023, 10:17 PM
                                        • Document Archive
                                          ACER eMachines PT.NCAE2.071 eMachines EL1850 E5800 Specification for Upgrade or Repair
                                          by Document Archive
                                          This specification for the ACER eMachines PT.NCAE2.071 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the eMachines PT.NCAE2.071 boardview and eMachines PT.NCAE2.071 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet,...
                                          09-12-2024, 03:36 PM
                                        • ant3202
                                          HP 27es - LED monitor - Monitor Flashing On - Off
                                          by ant3202
                                          Hi Everyone

                                          Lately I am experiencing the deja-vu incident on one of the led monitor like this.
                                          https://www.badcaps.net/forum/troubl...lashing-on-off

                                          The monitor is HP 27es LED Monitor
                                          https://h30434.www3.hp.com/t5/Deskto...e/td-p/6804692

                                          The monitor will randomly blackout and display no signal and will recover again.
                                          Sometimes need to power and off again to restore the display but...
                                          03-20-2025, 07:30 PM
                                        • Rick_1234
                                          LG 23MP55HQ LED Monitor turns off after a few seconds or flickers.
                                          by Rick_1234
                                          Good evening, gentlemen.

                                          I have a problem with my monitor. It turns off after a few seconds or flickers. Shining a flashlight on the screen doesn't show any image, so I guess it's not the "2 seconds to dark" I read in the forum.

                                          To turn it back on, I have to press the power button twice. Then after a few seconds it turns off again or flickers. See video.
                                          https://drive.google.com/file/d/1L6S...ew?usp=sharing


                                          Things I tried

                                          - Bought a new AC adapter thinking that was the problem but the problem...
                                          06-22-2024, 04:44 PM
                                        • momaka
                                          Wise Wing F199 19'' LCD monitor - recapped
                                          by momaka
                                          Looking through my repair pictures and notes, it's been a long time since I posted anything in the LCD monitors section. So here goes that.

                                          I'm dedicating this thread to one of the very first LCD monitors I repaired (if not the first one), which was more than 10 years ago now. The monitor is a Wise Wing, model F199. It's a 19” CFL-backlit LCD. I got it for free off of Craigslist in 2009 from a guy, who said he bought it for cheap from Wallmart and the monitor worked only for a little less than 2 years before quitting.

                                          When I saw the Craigslist post, I wasn't...
                                          08-24-2020, 10:58 AM
                                        • Loading...
                                        • No more items.
                                        Working...