Chipset repair

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  • Tkempt200
    Junior Member
    • Sep 2018
    • 8

    Chipset repair

    I acquired a non working Verus I believe I have found out why. Little back story for fun is that this unit would power up but no screen activity. Well I took it all part to get to the hard drive to make sure it was good. I was able to put it in my gaming computer as a second drive and see it and run files on it so the drive is good just could not boot from it. I found out later about the encryption on these things. Also seen about a bad ram chip would also give a no boot. When I started looking there I found a chip that is exploded we’ll say. Now I believe this chip would have been a chip that had a 226v 40372 writing on it. Just judging by size and shape so I have no way of confirming this so that where I need the help. And maybe where I could get one.



  • SnapOnKid
    Senior Member
    • Jan 2011
    • 870

    #2
    Snap on Does not hand out that info.

    What model is the Verus you are working on? Maybe those that have had them apart might know or have a picture of the same board.

    Comment

    • Tkempt200
      Junior Member
      • Sep 2018
      • 8

      #3
      EEMS323

      Comment

      • Tkempt200
        Junior Member
        • Sep 2018
        • 8

        #4
        Originally posted by John Lansford
        Well first you have to determine whether this is 2 pins or more?
        Looks to be 2 pins

        Originally posted by John Lansford
        Is this under the CPU Heatsink/Fan?
        Yes

        Originally posted by John Lansford
        Could the part number be 220 not 226?
        I’m just basicing it off of one that close in size and shape to one on the board so truly could not tell ya what it is.

        Originally posted by John Lansford
        The letters in this series are A, B, C, CA, Y, Z
        Something else I couldn’t tell ya.

        The soldering iron I have will not unsolder the chip. I guess it won’t get hot enuff. It old. So I can’t look under it and see enything. I’ve had other failed projects due to that thing so I’ll be looking into a new one.

        Comment

        • John Lansford
          Junior Member
          • Nov 2014
          • 16

          #5
          I was wrong in my post about the chip being a TVS. The way it exploded and the black coloring in the photo made me think it was similar to my problem.

          The capacitor nearby is a 22uF 40Volt Capacitor.


          These chips are difficult to unsolder because of the non-lead solder.
          Last edited by John Lansford; 09-13-2018, 03:42 AM.

          Comment

          • Tkempt200
            Junior Member
            • Sep 2018
            • 8

            #6
            In last nights reading I found where there thing come from. I believe it’s made by avx.com



            I can match up the logo 226 and the V but the 40372 is still a question.

            I put a email in to them so we’ll see what happens

            Comment

            • John Lansford
              Junior Member
              • Nov 2014
              • 16

              #7
              AVX

              22uF 50Volt Tantalum Capacitor
              Last edited by John Lansford; 09-13-2018, 10:29 AM.

              Comment

              • John Lansford
                Junior Member
                • Nov 2014
                • 16

                #8
                That is a capacitor in the Switch Mode Power Supply Circuit.

                Wonder what other devices might have blown along that path?
                You said the Screen is black?

                Comment

                • Tkempt200
                  Junior Member
                  • Sep 2018
                  • 8

                  #9
                  The touchscreen does not come on and when. You use a external monitor the monitor can see something is plug in it but there is no video signal. I’ve read on anther post about a bad ram card doing that as well.

                  Comment

                  • Tkempt200
                    Junior Member
                    • Sep 2018
                    • 8

                    #10
                    Well I ordered what I thought was going the right thing. It is for sure not the same.

                    I’ve update link to go to the right one



                    But what I did learn no matter what way you flip it and I even tried just putting a jumper in and it did not change anything but when I put a jumper in it would just give a power light no WiFi light or fans.
                    Last edited by Tkempt200; 09-22-2018, 06:02 PM.

                    Comment

                    • John Lansford
                      Junior Member
                      • Nov 2014
                      • 16

                      #11
                      I believe that is the correct part.

                      also remember to use correct polarity.
                      The end with the dark line is the anode or positive end.

                      You said you were having problem removing capacitor from board.
                      I use both flux and extra 60/40 solder to the area to help with melting the old solder.

                      There may be more parts bad they don't all necessarily have to blow up to be damaged.

                      Comment

                      • Tkempt200
                        Junior Member
                        • Sep 2018
                        • 8

                        #12
                        Originally posted by John Lansford
                        I believe that is the correct part.

                        There may be more parts bad they don't all necessarily have to blow up to be damaged.
                        The part is not the same size nor does it have the V. It has T. As far as other parts being bad I’m not sure how I’d determine that. Did use a small led as a test light and could get it to light up on one side but not the other with the new chip.

                        Comment

                        • John Lansford
                          Junior Member
                          • Nov 2014
                          • 16

                          #13
                          You have to measure SMD parts to get the right size.

                          You are finding out how hard it is to fix electronics without a circuit diagram.

                          If you look at my repair of the charger circuit you only see the chips that are cracked or exploded but I changed a TVS that looked perfectly fine also.

                          Sometimes you can look at the chips surrounding the bad capacitor and measure them for shorts or opens.
                          There are diodes and MOSFET switching transistors in that area. Like I said some sort of DC-DC power circuit.

                          Did you pay a lot for the Verus unit or did you get it very reasonable?

                          Comment

                          • Tkempt200
                            Junior Member
                            • Sep 2018
                            • 8

                            #14
                            250$ is what I got it for so I don’t really think it a lot. I don’t really have a need for one of these. Always has been a want to have. Figured I’d give it a try to fix one and if fixed I’d have anther tool for my playing.

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