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    #1

    replace capxon with chemicon lower uf?

    hi, i have a switch here with a dead cap on the main board. It's a capxon kf series 470uf 25V. i dont have any of those caps but i do have a 330uf 25V KY cap. should that be good enough? the capxon cap has 1200 ripple and the KY has 865 ripple
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    #2
    Re: replace capxon with chemicon lower uf?

    Originally posted by CuriousD View Post
    should that be good enough?
    No, you don't want to go down in capacitance and ripple. For test purposes, it may be okay to use, but not as a long term fix.

    See PCBONEZ talk about the above

    https://www.badcaps.net/forum/showpo...30&postcount=7
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      #3
      Re: replace capxon with chemicon lower uf?

      aren't capxon usually over spec'd though? would it be possible to go up on capacitance and ripple, but down in voltage to like 16V? thanks for the useful link!
      Last edited by CuriousD; 09-13-2012, 01:32 PM.

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        #4
        Re: replace capxon with chemicon lower uf?

        Originally posted by CuriousD View Post
        aren't capxon usually over spec'd though?
        Capxon, no doubt, from all the pictures, stories and my own experience make terrible quality caps. I can't complain too much because all my equipment has come from previous owners discarding them as "not working".

        However, the "good" Capxon ones that I removed all test around their stated capacitance value on various multimeters. I don't have an ESR meter so I don't know about ESR values.

        So based on my own limited experience and sample size, I would say they are not overspecified.

        PS. I keep the "good" ones as test caps.
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          #5
          Re: replace capxon with chemicon lower uf?

          If the input to the switch is 12v or lower, you can use a 16v cap. If not, you need a 25v one.
          Originally posted by PeteS in CA
          Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
          A working TV? How boring!

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            #6
            Re: replace capxon with chemicon lower uf?

            Originally posted by retiredcaps View Post
            Capxon, no doubt, from all the pictures, stories and my own experience make terrible quality caps. I can't complain too much because all my equipment has come from previous owners discarding them as "not working".

            However, the "good" Capxon ones that I removed all test around their stated capacitance value on various multimeters. I don't have an ESR meter so I don't know about ESR values.

            So based on my own limited experience and sample size, I would say they are not overspecified.

            PS. I keep the "good" ones as test caps.
            oh okay, so they're just really unreliable
            Originally posted by Th3_uN1Qu3 View Post
            If the input to the switch is 12v or lower, you can use a 16v cap. If not, you need a 25v one.
            How do I know if the input is 12V or lower? do i look on the specs of the switch's power supply or on the bottom of it? all i can see for input is 100-240VAC?

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              #7
              Re: replace capxon with chemicon lower uf?

              It is a wallwart type supply, right? It plugs in the wall socket, and has an output plug that goes to the switch. In that case, check what it says for "Output". Also, it would be wise to crack it open and check it for bad caps as well.
              Originally posted by PeteS in CA
              Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
              A working TV? How boring!

              Comment

                #8
                Re: replace capxon with chemicon lower uf?

                Originally posted by Th3_uN1Qu3 View Post
                It is a wallwart type supply, right? It plugs in the wall socket, and has an output plug that goes to the switch. In that case, check what it says for "Output". Also, it would be wise to crack it open and check it for bad caps as well.
                yeah, it takes a regular power cable like for a desktop computer. the power supply in it says "DC Output: +12V===5.0A" So a 16V cap should work on the mainboard? I can post a pic if you want.

                Although on the power supply, i think i should do a preventative recap by replacing the capxon's on the secondary that are "good"

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                  #9
                  Re: replace capxon with chemicon lower uf?

                  Originally posted by CuriousD View Post
                  it takes a regular power cable like for a desktop computer. the power supply in it says "DC Output: +12V===5.0A" So a 16V cap should work on the mainboard? I can post a pic if you want.
                  Alright, i get it, it's got an internal power supply not a wall wart. Yes, you can use a 16v cap in this case.
                  Originally posted by PeteS in CA
                  Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                  A working TV? How boring!

                  Comment

                    #10
                    Re: replace capxon with chemicon lower uf?

                    Originally posted by Th3_uN1Qu3 View Post
                    Alright, i get it, it's got an internal power supply not a wall wart. Yes, you can use a 16v cap in this case.
                    Thank you very much for the replies

                    Here's a picture. The red X is the cap that is dead and the one with the red dot is a cap of the same capacitance and voltage that I will also replace. Also gonna replace those brown capxon's cause they probably don't have much life left!
                    Attached Files

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