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the gutless, bloated, and fried power supply hall of shame

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    Re: the gutless, bloated, and fried power supply hall of shame

    Not much detail here... My media center/file server started locking up. It had failed POSTs, random segfaults, and udev hangs for a time before this incident. Those were signs i was ignoring. Today it hard locked, upon reboot it took 45 minutes to finish POST. I go through the usual steps, none work. So i pull out my trusty Tek 'scope and probe things. 3.3v is good. 5v has .3v of ripple, not so good. I get to the 12v rails and they have .5v of ripple.... HALF A VOLT! I cracked this thing open. Not the worst, but not good for a 750w PSU.

    To start off, Blackberry camera shot of the nameplate....

    mushkin MKNPSJL700.

    Now for the overhead

    Does have fan control. Heasinks are a little anorexic. Brown snot. Asia X caps.

    Solder side up!


    Not bad....

    Lifted pad on the PFC cap... (Again, sorry, i need to get my Moto fixed. This BB is shit)

    Damn... There goes the idea of fixing it...
    Attached Files
    Things I've fixed: anything from semis to crappy Chinese $2 radios, and now an IoT Dildo....

    "Dude, this is Wyoming, i hopped on and sent 'er. No fucking around." -- Me

    Excuse me while i do something dangerous


    You must have a sad, sad boring life if you hate on people harmlessly enjoying life with an animal costume.

    Sometimes you need to break shit to fix it.... Thats why my lawnmower doesn't have a deadman switch or engine brake anymore

    Follow the white rabbit.

    Comment


      Re: the gutless, bloated, and fried power supply hall of shame

      Originally posted by goontron View Post
      Does have fan control. Heasinks are a little anorexic. Brown snot. Asia X caps.
      I wouldn't say the heatsinks are anorexic. If the PSU is efficient, those heatsinks should be good enough for the ratings. The Antec EA-500 I have has much smaller heatsinks than that, and it will do its 500 Watt rating no problem.

      The crap caps and the tan/brown conductive glue are a bummer, though - especially the glue.

      Originally posted by goontron View Post
      Damn... There goes the idea of fixing it...
      https://www.badcaps.net/forum/attach...1&d=1486176440
      Wait, you are not fixing the PSU?
      Seems like a decent unit. I would, at least. New high quality caps and an hour of work are well worth the peace of mind in knowing that you now have a PSU that won't crap out on you... well, IMO, anyways.
      Last edited by momaka; 02-05-2017, 03:46 PM.

      Comment


        Re: the gutless, bloated, and fried power supply hall of shame

        It looks like the PCB snapped just a tad when he removed it from the PSU chassis. That's what he meant by not being able to fix it anymore.

        Comment


          Re: the gutless, bloated, and fried power supply hall of shame

          Doesn't look that bad to me... I fixed a radio PCB that was completely snapped in half. Had to run about 50 wires but it worked. I can't see what's so bad about this one?
          "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
          -David VanHorn

          Comment


            Re: the gutless, bloated, and fried power supply hall of shame

            I will fix it I suppose. I don't like how the board is warped...
            Things I've fixed: anything from semis to crappy Chinese $2 radios, and now an IoT Dildo....

            "Dude, this is Wyoming, i hopped on and sent 'er. No fucking around." -- Me

            Excuse me while i do something dangerous


            You must have a sad, sad boring life if you hate on people harmlessly enjoying life with an animal costume.

            Sometimes you need to break shit to fix it.... Thats why my lawnmower doesn't have a deadman switch or engine brake anymore

            Follow the white rabbit.

            Comment


              Re: the gutless, bloated, and fried power supply hall of shame

              Originally posted by jazzie366 View Post
              Where did you find this!? That's a KenTek PSU which the manufacturer of is currently unknown, they should be found and shamed and also made liable for all the PCs that have been destroyed by them.
              That PSU looks like a laptop PSU on steroids! LOL!
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              Comment


                Re: the gutless, bloated, and fried power supply hall of shame

                Found this little beauty in a Compaq Presario A64.

                Must have been a thoughtless replacement at some point for the original!

                Fan was very stiff so I guess it ran hot and somewhat overloaded for some time in order to cook more or less every cap in the unit!
                Attached Files

                Comment


                  Re: the gutless, bloated, and fried power supply hall of shame

                  Originally posted by Bungz View Post
                  Found this little beauty in a Compaq Presario A64.

                  Must have been a thoughtless replacement at some point for the original!

                  Fan was very stiff so I guess it ran hot and somewhat overloaded for some time in order to cook more or less every cap in the unit!
                  That might actually be worth a fix.

                  What did they smoke to label a ERL35 transformer EI-33ASG?
                  Main rig:
                  Gigabyte B75M-D3H
                  Core i5-3470 3.60GHz
                  Gigabyte Geforce GTX650 1GB GDDR5
                  16GB DDR3-1600
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                  FSP Bluestorm II 500W (recapped)
                  120GB ADATA + 2x Seagate Barracuda ES.2 ST31000340NS 1TB
                  Delux MG760 case

                  Comment


                    Re: the gutless, bloated, and fried power supply hall of shame

                    I think I saw a March, 2001 date code on one of the caps. There's a good chance to original PSU was from Delta, and if it lasted for 15 years, it did pretty good. At any rate, while I wouldn't use that thing for the full rated 300W when brand new, restored it would probably be good for 200W-250W. The two potential limiting factors would be the 2A +5VSB and, more importantly, the 10A rating for the +12V output.
                    PeteS in CA

                    Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
                    ****************************
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                      Re: the gutless, bloated, and fried power supply hall of shame

                      The PSU predates the Compaq by some years without a doubt.

                      I figured the person I acquired the machine off did a quick fix and swapped the PSU out for one from a older machine.

                      Usually I am up for repairing such things but the weak 12V rail really means its rather useless for me in this system.

                      Machine however is now sporting a 300W FSP unit and it working perefctly

                      Comment


                        Re: the gutless, bloated, and fried power supply hall of shame

                        Originally posted by Bungz View Post
                        The PSU predates the Compaq by some years without a doubt.

                        I figured the person I acquired the machine off did a quick fix and swapped the PSU out for one from a older machine.

                        Usually I am up for repairing such things but the weak 12V rail really means its rather useless for me in this system.

                        Machine however is now sporting a 300W FSP unit and it working perefctly
                        As far as my experience goes, I used recapped Deers similar to the Mercury above (except the diodes-on-bracket were replaced with actual rectifiers) to power Northwood based PCs. (in fact,one of the PCs I gave runs a P4 2.8 Northwood with a FX5200,a MSI 845E Max mobo and a 120GB WDC HDD)
                        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


                          Re: the gutless, bloated, and fried power supply hall of shame

                          Originally posted by Bungz
                          Found this little beauty in a Compaq Presario A64.

                          Must have been a thoughtless replacement at some point for the original!

                          Fan was very stiff so I guess it ran hot and somewhat overloaded for some time in order to cook more or less every cap in the unit!
                          Oh Deer!

                          It's one of their "2003"/"2005" chip-of-the-year BTX designs (BTX for Deer/L&C typically signifies the primary is located on the same side as the receptacle plug and the secondary is same side as the fan... not the other way around like with other "normal" PSUs).

                          That said, with a better rectifier on the 12V rail and bigger output caps, this thing could probably provide up to 14 Amps on the 12V rail, which should be enough to power a Pentium 4 / Core 2 Duo / low power Core i3 or i5 system with on-board or low-power GPU and single HDD. I'm not sure if it's worth the hassle fixing it, though.

                          I would do it for fun, but I don't expect anyone else to be like me.

                          Comment


                            Re: the gutless, bloated, and fried power supply hall of shame

                            The worst trash I could find, this PSU i was installed on a pc, the owner of the pc complained that it did not start all the time, and it squeaked, and it did not work stable the pc.

                            Subject: 3G0 "450W"

                            primary
                            ate 7n60
                            c5027s
                            2 cap jay'long 200v 470 microfarads
                            ic ka3842
                            diode bridge diferent size LOL
                            x2 sep 1n5
                            x2 sep rl2


                            secondary
                            diode lt 338
                            switch st stps30 45cw 30A (The only thing of decent brand xD) but the transformer that accompanies ... this would cause havoc. does not meet what promises in its label.
                            apd sbr1040ct
                            4x chengx 10v 2200 microfarads
                            2x chengx 16v 470 microfarads for 5vsb
                            2x chengx 16v 470 microfarads

                            At least it has one good thing, it has 2 thermistors

                            The transformer is super tiny!
                            Attached Files
                            Last edited by kevin!; 03-23-2017, 03:24 PM.
                            Gaming pc:
                            nVidia RTX 3080 TI, Corsair RM750I.
                            Workshop PC:
                            Intel core i5 8400, Intel SSD 256GB, nvidia gt1030, asus b365-a.
                            Server:

                            Comment


                              Re: the gutless, bloated, and fried power supply hall of shame

                              It's sad how that can be passed off as a 450W PSU. [I'm guessing 100W maybe.]

                              I like the brand of the input capacitors. [jay'long]
                              I'm not a expert, I'm just doing my best.

                              Comment


                                Re: the gutless, bloated, and fried power supply hall of shame

                                Originally posted by ruky con View Post
                                It's sad how that can be passed off as a 450W PSU. [I'm guessing 100W maybe.]

                                I like the brand of the input capacitors. [jay'long]
                                It will surely be 100W, As it requires power, it bursts xD
                                What is not as it has not yet exploded, nor the capacitors "jay long" xD.
                                Gaming pc:
                                nVidia RTX 3080 TI, Corsair RM750I.
                                Workshop PC:
                                Intel core i5 8400, Intel SSD 256GB, nvidia gt1030, asus b365-a.
                                Server:

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