Gotta love these cheap capacitors!

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  • jjne
    Member
    • Mar 2013
    • 47
    • uk

    #1

    Gotta love these cheap capacitors!

    Spot the problem with this capacitor, branded "K-T":
    Attached Files
  • TechGeek
    Computer Geek
    • Jan 2015
    • 2254
    • USA

    #2
    Re: Gotta love these cheap capacitors!

    DOA. Already leaking from the top.
    Don't buy those $10 PSU "specials". They fail, and they have taken whole computers with them.

    My computer doubles as a space heater.

    Permanently Retired Systems:
    RIP Advantech UNO-3072LA (2008-2021) - Decommissioned and taken out of service permanently due to lack of software support for it. Not very likely to ever be recommissioned again.
    Asus Q550LF (Old main laptop, 2014-2022) - Decommissioned and stripped due to a myriad of problems, the main battery bloating being the final nail in the coffin.


    Kooky and Kool Systems
    - 1996 Power Macintosh 7200/120 + PC Compatibility Card - Under Restoration
    - 1993 Gateway 2000 80486DX/50 - Fully Operational/WIP
    - 2004 Athlon 64 Retro Gaming System - Indefinitely Parked
    - Main Workstation - Fully operational!

    sigpic

    Comment

    • jjne
      Member
      • Mar 2013
      • 47
      • uk

      #3
      Re: Gotta love these cheap capacitors!

      It's worse than that. They've somehow managed to omit the metal case from the manufacturing process altogether

      Cap is completely dried out, unsurprisingly -- the shrink-wrap was applied to the bare paper...

      Comment

      • ReeceyBurger123
        Never Give Up !
        • May 2014
        • 7325
        • Britain

        #4
        Re: Gotta love these cheap capacitors!

        Lol they are that cheap they are not even adding a proper case to the cap
        Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

        https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • TechGeek
          Computer Geek
          • Jan 2015
          • 2254
          • USA

          #5
          Re: Gotta love these cheap capacitors!

          #socheapyoucantmakeasimpleelectrolyticcapacitorproperly

          darn spaces self-inserting themselves
          Don't buy those $10 PSU "specials". They fail, and they have taken whole computers with them.

          My computer doubles as a space heater.

          Permanently Retired Systems:
          RIP Advantech UNO-3072LA (2008-2021) - Decommissioned and taken out of service permanently due to lack of software support for it. Not very likely to ever be recommissioned again.
          Asus Q550LF (Old main laptop, 2014-2022) - Decommissioned and stripped due to a myriad of problems, the main battery bloating being the final nail in the coffin.


          Kooky and Kool Systems
          - 1996 Power Macintosh 7200/120 + PC Compatibility Card - Under Restoration
          - 1993 Gateway 2000 80486DX/50 - Fully Operational/WIP
          - 2004 Athlon 64 Retro Gaming System - Indefinitely Parked
          - Main Workstation - Fully operational!

          sigpic

          Comment

          • ratdude747
            Black Sheep
            • Nov 2008
            • 17136
            • USA

            #6
            Re: Gotta love these cheap capacitors!

            Looks more like a manufacturing defect that the non-existent QC failed to catch.
            sigpic

            (Insert witty quote here)

            Comment

            • jjne
              Member
              • Mar 2013
              • 47
              • uk

              #7
              Re: Gotta love these cheap capacitors!

              Originally posted by ratdude747
              Looks more like a manufacturing defect that the non-existent QC failed to catch.
              It is a defect, I have 49 other similar capacitors here which are fine (quite low ESR for the size as well).

              Rather worrying that they could get this one so badly wrong though

              Comment

              • ratdude747
                Black Sheep
                • Nov 2008
                • 17136
                • USA

                #8
                Re: Gotta love these cheap capacitors!

                Originally posted by jjne
                It is a defect, I have 49 other similar capacitors here which are fine (quite low ESR for the size as well).

                Rather worrying that they could get this one so badly wrong though
                Did you measure the ESR? I can slap a BS number on anything too.
                sigpic

                (Insert witty quote here)

                Comment

                • jjne
                  Member
                  • Mar 2013
                  • 47
                  • uk

                  #9
                  Re: Gotta love these cheap capacitors!

                  Originally posted by ratdude747
                  Did you measure the ESR? I can slap a BS number on anything too.
                  Yes, I have an ESR meter here.

                  These are measuring around .25 (220uF) where my meter generally reads about .3 for a decent-quality GP cap.

                  Comment

                  • ratdude747
                    Black Sheep
                    • Nov 2008
                    • 17136
                    • USA

                    #10
                    Re: Gotta love these cheap capacitors!

                    Originally posted by jjne
                    Yes, I have an ESR meter here.

                    These are measuring around .25 (220uF) where my meter generally reads about .3 for a decent-quality GP cap.
                    Oh, you were comparing to GP caps, not low ESR caps.
                    sigpic

                    (Insert witty quote here)

                    Comment

                    • jjne
                      Member
                      • Mar 2013
                      • 47
                      • uk

                      #11
                      Re: Gotta love these cheap capacitors!

                      Originally posted by ratdude747
                      Oh, you were comparing to GP caps, not low ESR caps.
                      No, absolutely not, that would be an unfair comparison given these cost just over a cent each

                      They're definitely on the low side for a GP cap though, which is surprising as the cheap Chinese junk usually is high ESR.

                      More by luck than design if the daft one above is anything to go by!

                      Comment

                      • ReeceyBurger123
                        Never Give Up !
                        • May 2014
                        • 7325
                        • Britain

                        #12
                        Re: Gotta love these cheap capacitors!

                        Originally posted by ratdude747
                        Looks more like a manufacturing defect that the non-existent QC failed to catch.
                        Yeah I know I was joking
                        Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                        https://www.facebook.com/Telford-Tel...7894576335359/

                        Comment

                        • kc8adu
                          Super Moderator
                          • Nov 2003
                          • 8832
                          • U.S.A!

                          #13
                          Re: Gotta love these cheap capacitors!

                          lol.put some electrolyte in a dripper bottle so you can treat the device like a dripper vape?

                          Comment

                          • TechGeek
                            Computer Geek
                            • Jan 2015
                            • 2254
                            • USA

                            #14
                            Re: Gotta love these cheap capacitors!

                            trolololawl
                            Don't buy those $10 PSU "specials". They fail, and they have taken whole computers with them.

                            My computer doubles as a space heater.

                            Permanently Retired Systems:
                            RIP Advantech UNO-3072LA (2008-2021) - Decommissioned and taken out of service permanently due to lack of software support for it. Not very likely to ever be recommissioned again.
                            Asus Q550LF (Old main laptop, 2014-2022) - Decommissioned and stripped due to a myriad of problems, the main battery bloating being the final nail in the coffin.


                            Kooky and Kool Systems
                            - 1996 Power Macintosh 7200/120 + PC Compatibility Card - Under Restoration
                            - 1993 Gateway 2000 80486DX/50 - Fully Operational/WIP
                            - 2004 Athlon 64 Retro Gaming System - Indefinitely Parked
                            - Main Workstation - Fully operational!

                            sigpic

                            Comment

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