ADSL 2+ Modem

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  • rigeback
    Badcaps Veteran
    • Mar 2011
    • 420
    • Malta

    #1

    ADSL 2+ Modem

    Out of curiosity I decided to post this modem that went dead after the storm, including the LAN router, both units are dead possibly because the LAN cable was ran outside of the house although the ethernet cards on both computers work fine!
    I was wondering if it might be possible to salvage this modem which I have already replaced with a new one for rainy days.
    The micro fuse is still good but the rest is a mystery, if it should be trashed then so be it.
    Attached Files
  • RJARRRPCGP
    Badcaps Legend
    • Jul 2004
    • 6301
    • USA

    #2
    Re: ADSL 2+ Modem

    Looks like a bulging cap at C62.
    Last edited by RJARRRPCGP; 09-10-2011, 04:02 PM.
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    Comment

    • lmcancu
      Senior Member
      • Oct 2009
      • 158

      #3
      Re: ADSL 2+ Modem

      The resistors near R88 also look shot? Something blew up there??

      Comment

      • rigeback
        Badcaps Veteran
        • Mar 2011
        • 420
        • Malta

        #4
        Re: ADSL 2+ Modem

        Thanks for the info and I agree best leave osama dead

        Comment

        • lmcancu
          Senior Member
          • Oct 2009
          • 158

          #5
          Re: ADSL 2+ Modem

          The chip directly next to the resistors seems to be a LAN filter? What is the yellow housing?
          Maybe just the power input circuit got burned? You can try replacing the blue tantalum capacitor (seems also to have taken a hit), and burned resistors. Also replace the big CAPxcon capacitor and the rest of the electrolytics as at least one seems bloated.

          Comment

          • shadow
            Badcaps Veteran
            • Feb 2007
            • 732
            • Australia

            #6
            Re: ADSL 2+ Modem

            The yellow housing in routers normally signify LAN Ports or more generically RJ45 connectors. However I can't quite work out why there are two of them right now...

            Comment

            • joshnz
              Badcaps Veteran
              • Feb 2011
              • 969
              • New Zealand

              #7
              Re: ADSL 2+ Modem

              I'm guessing there must have been a current loop, maybe power entered through phone line exited through lan and modem power supply's
              Last edited by joshnz; 09-11-2011, 04:50 PM.
              My pc
              CPU : AMD PHENOM II x4 @ 3.5Ghz
              MB : ASUS M4A89TD PRO USB3
              RAM : Kingston ValueRAM 16gb DDR3
              PSU : Cooler Master 850W Silent Pro
              GPU : ATI Radeon HD 6850

              Comment

              • seanc
                Badcaps Legend
                • Nov 2008
                • 1319

                #8
                Re: ADSL 2+ Modem

                C62 is dead - probably because it's a Capxon.
                Looks to me like the blue cap took the hit and has just smoke damaged the resistors next door.
                I would guess this is a low end router rather than a modem.

                Change the 2 and see what happens

                Comment

                • lmcancu
                  Senior Member
                  • Oct 2009
                  • 158

                  #9
                  Re: ADSL 2+ Modem

                  I would agree, change the bloated cap and the blue one and see what happens

                  Comment

                  • rigeback
                    Badcaps Veteran
                    • Mar 2011
                    • 420
                    • Malta

                    #10
                    Re: ADSL 2+ Modem

                    Originally posted by joshnz
                    I'm guessing there must have been a current loop, maybe power entered through phone line exited through lan and modem power supply's
                    I did take the precaution of removing the phone line not thinking of the one external ethernet line, this modem and the d-link router upstiars to the hit.

                    Comment

                    • rigeback
                      Badcaps Veteran
                      • Mar 2011
                      • 420
                      • Malta

                      #11
                      Re: ADSL 2+ Modem

                      Originally posted by shadow
                      The yellow housing in routers normally signify LAN Ports or more generically RJ45 connectors. However I can't quite work out why there are two of them right now...
                      Yes the yellow housing is the ethernet 2 line connecter, this modem is 6 years old but worked okay for speed of this line.

                      Comment

                      • rigeback
                        Badcaps Veteran
                        • Mar 2011
                        • 420
                        • Malta

                        #12
                        Re: ADSL 2+ Modem

                        Originally posted by seanc
                        C62 is dead - probably because it's a Capxon.
                        Looks to me like the blue cap took the hit and has just smoke damaged the resistors next door.
                        I would guess this is a low end router rather than a modem.

                        Change the 2 and see what happens
                        will give a try when see some parts around although I think those resistors are burnt

                        Comment

                        • Agent24
                          I see dead caps
                          • Oct 2007
                          • 4913
                          • New Zealand

                          #13
                          Re: ADSL 2+ Modem

                          Lightning can do funny things...
                          "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                          -David VanHorn

                          Comment

                          • rigeback
                            Badcaps Veteran
                            • Mar 2011
                            • 420
                            • Malta

                            #14
                            Re: ADSL 2+ Modem

                            yep it fried a few of the other peoples gagets in the same street and come to think of it the wireless router down stairs took the hit on the power adapter which the shop changed out under warranty.

                            Comment

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