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    I-Inc monitor power supply

    i have an I-Inc 19" LCD monitor, Mod. # HSG1022, Mfg. Date 11-2008 that is dead. Well, not quite dead, it gets power and flashes something on screen every few seconds, just some colored rectangles or something like that.

    Google search lead me to believe that there is a chance the power supply has bad caps, so I opened it up to check. There do appear to be 4 caps that have slightly bulged tops, as opposed to completely flat ones on all the others. All these caps are Samxon brand: 3 - 1000uF 25V that measure 12-13x20mm, 1 - 470uF 25v that measures 10x15mm. They have marking of "105 degrees CF", and "SF(M)".
    I don't see any leakage or bulging except that the tops are slightly convex.

    Since Samxon is a recommended brand sold here, and they are not that old, I don't want to jump to the conclusion that they are at fault, but I am wondering if this is the likely cause of the monitors problem, and what replacement caps I can use? None of the Samxon's listed on badcaps.net seem to be an exact match.

    The power supply is Li Shin, Mod. #0801D243. if that helps at all. It also has these caps that look OK: 1 - 100uF 400v which measures 16-17x30mm, 2 - 330uF 25v that measure 8x14mm (all Samxon), 1 - 47uF 50v Rubicon that measures 6x10mm. There is also 1- 10uF that I cannot read the other specs or brand, due to it's proximity to other components and a dab of glue on it. It measures about 5x8mm. It has a jumper switch that is labeled:
    1<-->3 7.5mA
    2<-->4 7.0mA
    1<-->2 6.5mA
    if that would be of any use in troubleshooting.
    I can provide photos of the power supply if needed.

    Although, I had never heard of this brand monitor, the LCD is Samsung and the circuit boards appear to be of good quality with no obvious defects, other than possibly the 4 caps. Any advice, tips, or source of a replacement power supply much appreciated!
    Attached Files

    #2
    Re: I-Inc monitor power supply

    Originally posted by fstephens View Post
    There do appear to be 4 caps that have slightly bulged tops, as opposed to completely flat ones on all the others.
    Those caps in your picture with the red arrow are DEFINITELY bad.

    Heat rises and 3 of those caps are at the very top of the monitor and take the brunt of the heat from the heatsink. Heat kills caps.

    Since 50% of your caps failed, we would recommend replacing all of them. The only exception might be the Rubycon one, but if you live in a hot climate or don't have very good ventilation on where your monitor is placed, replace them ALL.

    The exception would be the very big cap. It rarely fails (but not never).

    If you live in the USA, follow PlainBill's instruction on how to order caps at digikey.com

    https://www.badcaps.net/forum/showpo...33&postcount=2

    Total cost including shipping should be less than $10 USD.

    edit: Geez that monitor didn't last 2 years! Samxon makes different series of caps. This could be a "lemon" series.
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    Comment


      #3
      Re: I-Inc monitor power supply

      You definitely need to replace those caps. As a matter of fact, replace all 7 of them (probably run under $10 icluding shipping). A good replacement choice would be Panasonic or FM or FC series. Use the instructions below to order:

      1) Go to digikey.com

      2) In the "parts search" window type: panasonic fm and select "GO" button

      3) Under the Capacitor heading select "Aluminum"

      4) The first two columns you see are capacitance and voltage. Highlight the value and voltage with your mouse and select the "Apply Filters" button

      5) You'll see several selections available. Here's what to look for:


      a) Look at the quantity available and minimum purchase. If "0" are available, then there's none to purchase. Some selections require a minumum purchase of a 1000 units, which you also don't want. I think you get the picture.

      b) Size and diameter. Measure the original caps and compare to what's listed.


      6) If your value is out of stock, go back to the beginning and type in "panasonic fc" and go through the same process

      7) During the checkout process select USPS First Class shipping, since this will give the best ship rate.

      Comment


        #4
        Re: I-Inc monitor power supply

        Oops! I missed one cap. Replace all 8 of them except for the large 100uf 400V one.

        Comment


          #5
          Re: I-Inc monitor power supply

          I did a different model I-INC 19" last year.
          Was a dead freebie. - I'm using it right now. LOL.

          Replace all except the 100uf 400V and it should be fine.
          .
          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


            #6
            Re: I-Inc monitor power supply

            Originally posted by PCBONEZ View Post
            I did a different model I-INC 19" last year.
            Was a dead freebie. - I'm using it right now. LOL.

            Replace all except the 100uf 400V and it should be fine.
            .
            Why do I have this nasty feeling that somewhere in China a 'bean counter' is saying "We should use a cheaper cap for the main filter cap. They are lasting too long."

            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


              #7
              Re: I-Inc monitor power supply

              Originally posted by PlainBill View Post
              Why do I have this nasty feeling that somewhere in China a 'bean counter' is saying "We should use a cheaper cap for the main filter cap. They are lasting too long."

              PlainBill
              I can see it.
              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


                #8
                Re: I-Inc monitor power supply

                Thanks guys! Very impressed with the detailed posts and fast replys.
                I am on Digi-Key's site now. Should I worry that some of the Panasonic caps only are rated at 3-4000 hrs? Would I be better off to buy different brand/quality?

                Comment


                  #9
                  Re: I-Inc monitor power supply

                  That's not expected or useful lifetime, it's endurance lifetime.
                  The number is not useful for anything practical.

                  Look at ESR [Impedance] and Ripple.
                  Ripple - more is better.
                  ESR - less is better.

                  I would use Panasonic FM if they are available in diameters that will work.

                  .
                  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


                    #10
                    Re: I-Inc monitor power supply

                    Oh, and make sure to look only at 105C rated 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


                      #11
                      Re: I-Inc monitor power supply

                      OK, thanks pcbonez. found all except the big 100uF.
                      And the 105 C is temperature tolerance? My originals say 105 CF?

                      Comment


                        #12
                        Re: I-Inc monitor power supply

                        Yes 105C is the max temp rating.

                        I'm not sure what the F is on your old caps.
                        If you care I might be able to figure it out with a readable pic or two of the 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


                          #13
                          Re: I-Inc monitor power supply

                          You know after replacing the caps I get a "No signal input check video cable" error message. At least no its displaying something. Just to let you all know that it could be a cable issue. That is what it was after I replaced the caps.

                          Comment

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