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KENTEK KTPS-1050 IC Unrecognizable 110V on 220V Blown

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    #1

    KENTEK KTPS-1050 IC Unrecognizable 110V on 220V Blown

    I'm Santiago a 23 year old electronic technician and system administrator from buenos aires argentina.

    Recently bought a brand new KENTEK KTPS-1050 psu from the usa and came set in 110v and here have 220v current, my brother just connect it and guess what? haha
    So, since the shipping fee is the same value as the psu I open it to see what its going on.

    I found visible damage on the primary stage, a blown IC who cant identify, a few fuse resistors also blown who will replace for 10ohm or lower ones, a diode break just in the middle, and only one VISIBLE 820uf/200v dead (I will replace all of them just in case)

    There's no or null information at all on internet about this psu, even cant find the manufacturer mail to see if can help me identifing the blow components.
    I spend some hours seeing some atx diagrams and looking pictures to see what is this IC and some caps who cant see correctly what there is, mainly polyester and ceramic.

    The only datasheet found for the SW2604 is in chinese and cant find them in any other atx diagram or picture of modern atx supplys.
    Thanks to all this wonderfull and unique comunity!

    PS: Sorry for my bad english, spanish is my native language.
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    #2
    Re: KENTEK KTPS-1050 IC Unrecognizable 110V on 220V Blown

    Those are all fake Chemi Con caps (the 4 big ones) so yeah it'd be good to replace them anyways. I have a similar Leadman and on mine that IC chip reads JD3310D. Not much info on it and probably exclusive to Leadman. That is a very interesting PSU
    Last edited by Pentium4; 06-13-2013, 10:15 AM.

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      #3
      Re: KENTEK KTPS-1050 IC Unrecognizable 110V on 220V Blown

      Originally posted by Pentium4 View Post
      Those are all fake Chemi Con caps (the 4 big ones) so yeah it'd be good to replace them anyways. I have a similar Leadman and on mine that IC chip reads JD3310D. Not much info on it and probably exclusive to Leadman. That is a very interesting PSU
      Thank you for that!. A quick google search show NOTHING, only one result with a ghost datasheet.

      The total cost of the psu: $32.99 + $24.99 of shipping.
      Only the pair of W15NB50 is $13...

      I think repair thereof will exceed or match the price of the same unit new,
      so I start taking as a possibility reuse the secondary caps of this unit to replace the defective in a TACENS SUPERO 500...

      Is a shame, although the components are cheap, it is a very nice psu. : (

      Is anyone had any other information or can give me an idea on this, you're welcome.

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        #4
        Re: KENTEK KTPS-1050 IC Unrecognizable 110V on 220V Blown

        It is a very nice PSU for a Leadman. I would not reuse the secondary caps though, they are probably ChengX which have just average ripple ratings and only rated for 2,000 hours @ 105C

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