Which one to rebuild?

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  • Dan81
    SNES-powered
    • Oct 2013
    • 1865
    • Romania

    #1

    Which one to rebuild?

    Okay,so I got two PSUs from a friend that was going to throw them away. One is a Premier LC-B350ATX (made by Deer/L&C) and the other is a ALine LC-8500BTX (which strangely isn't made by Deer this time,but Yuelin. Found that out as the PCB reads YLP-010.).

    Now the question is - which one do you think I should rebuild? I rebuilt the Premier more as a fun project on a rainy day,because I really had nothing else to do.
    -Most of the secondary silicon is upgraded now (only 12v has a 10A ultrafast because I didn't have any other 60-200VRRM rectifier - 5v and 3.3v both have SBL3040PTs.)
    -I replaced the Globe Fan with a Jamicon fan,full w/ header.
    -reused sheatsinks from my defunct Fortrex/JNC LC-B300ATX (it had thick heatsinks and PFC,chose not to transplant the PFC onto this one because of airflow reasons.)
    -replaced the wimpy GINCON 330uF caps with larger light blue 470uF YC/Saturn caps
    -primary sillicon was left untouched (2SC5706 I think) because I don't have better transistors now (well,maybe 13007s )
    -complete input filter
    -EI-33ASG transformer left untouched
    -secondary side has almost all cap places populated (except one near the coil next to the 5v rectifier,I'll need a small diameter cap in there so unpopulated for now) and all PI coils added. (can you imagine this thing actually had a PI coil as the 3.3v choke? I replaced that with a proper choke.)

    And that's all. I also have a true ERL-35 transformer (marked YE ERL-35WGP/50-12) I took out of a dead Kaisen.

    Some info about the Yuelin:
    -EI-33 4.5mH HM transformer
    -Canicon (no ya can't ) caps EVERYWHERE
    -a fan branded just FAN! (lmao)
    -5v - 30a rectifier,3.3v - 30A rectifier,12v - 12A rectifier
    -"Jairchild" 13009 transistors (though the logo resembles more like a handwritten T)
    -no idea about the standby transistor
    -no input filtering whatsoever.

    Let me know which one do you think I should rebuild.
    Main rig:
    Gigabyte B75M-D3H
    Core i5-3470 3.60GHz
    Gigabyte Geforce GTX650 1GB GDDR5
    16GB DDR3-1600
    Samsung SH-224AB DVD-RW
    FSP Bluestorm II 500W (recapped)
    120GB ADATA + 2x Seagate Barracuda ES.2 ST31000340NS 1TB
    Delux MG760 case
  • PeteS in CA
    Badcaps Legend
    • Aug 2005
    • 3579
    • USA, Unsure of Planet

    #2
    Re: Which one to rebuild?

    If the BJT logo looks like this:



    the 13009s were made by Fairchild, which has been bought by On Semiconductor.
    PeteS in CA

    Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
    ****************************
    To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
    ****************************

    Comment

    • Dan81
      SNES-powered
      • Oct 2013
      • 1865
      • Romania

      #3
      Re: Which one to rebuild?

      Originally posted by PeteS in CA
      If the BJT logo looks like this:



      the 13009s were made by Fairchild, which has been bought by On Semiconductor.
      Not really. It looks more like a J on mine - the line that makes the F is missing.
      Main rig:
      Gigabyte B75M-D3H
      Core i5-3470 3.60GHz
      Gigabyte Geforce GTX650 1GB GDDR5
      16GB DDR3-1600
      Samsung SH-224AB DVD-RW
      FSP Bluestorm II 500W (recapped)
      120GB ADATA + 2x Seagate Barracuda ES.2 ST31000340NS 1TB
      Delux MG760 case

      Comment

      • momaka
        master hoarder
        • May 2008
        • 12175
        • Bulgaria

        #4
        Re: Which one to rebuild?

        Between these two PSUs: definitely rebuild the Deer/L&C - at least Deer/L&C PSUs work fairly reliably with good parts.

        Originally posted by Dan81
        (can you imagine this thing actually had a PI coil as the 3.3v choke? I replaced that with a proper choke.)
        Yup.

        Low-end L&C PSUs can go to the extreme sometimes with their stupid cost-cutting "techniques".

        I have a very old LC-235ATX like that with a PI coil instead of a proper toroid for the 3.3V rail. It also has DoaB for the 12V rail too. Still works, miraculously, though I stopped using it a long time ago.

        Comment

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