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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

    You must be joking. This power supply doesn't care about regulations.

    Legally, it can not be sold either way because any power supply above around 150w sold in EU must have at least Passive PFC...

    Well, technically - I'm not sure it has changed in the meantime, probably did change - but a few years ago the legislation only said that the amount of emi and other noise related stuff must be below a threshold and it just so happens passive pfc or active pfc was the easiest way to achieve that.

    But this article says it's a requirement nowadays: http://www.edn.com/electronics-news/...power-supplies

    Nobody checks these power supplies to see if they conform to standards here in Romania.

    I don't know. My guess is they got a sweet deal on that chinese tny clone and figured it's cheaper than getting a to-220 mosfet plus insulator sheet plus washer and screw.

    And btw, about that idle power rule... I think it's something like <0.15w idle in the latest versions of the standard.

    Comment


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

      I am typing like animal, should go sleep…

      Well, most cheap craps around I've seen lately at least comply with this one, though it's worse with power factor correction. It is good for PR when you state low idle consumption and really, price for those chips are very low lately, jsut everybody makes them for couple cents. Latest version of that european BS is more strict, it was under 0,5 W, maybe even less lately.

      As for the PFC, I think it still states treshold of harmonics. Ofc crap without any correction will have very bad harmonics just as natural fact, tried once to report such to some burreau responsible for checking products here, mister "engineer" there was only talking BS how my consumer grade equipment cannot measure anything of that and some other stuff. Not sure if he was just lazy or bribed, but one thing went out of him when I told him I don't see any PFC in there - those harmonics, no norm says anything about PFC explicitly. I looked into that subject afterwards and it was true.

      They may have changed it though but since the article you posted is somewhat old, I think author just got it wrong like 95 % of other such writers who never actually bumped into the norm itself.
      Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

      Exclusive caps, meters and more!
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        Re: the gutless, bloated, and fried power supply hall of shame

        From the UK:

        Attached Files

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

          That looks like a rebranded Coolmax unit, or at least the same OEM. Maybe 200W with the ripple in spec. What brand is the fan that it uses?

          Comment


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

            Other than the 300W and +12V current ratings and the rather empty looking secondary side, that isn't too awful. It even has EMI filtering with what looks like agency-rated parts. 200W seems pretty realistic.
            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

              Sorry P4, don't have the PSU around and can't check the fan.

              Yep the input filtering is passable but the output is a crime, not a PI coil on sight and just one small 1000uF cap on +12V, that's guaranteed boatloads of ripple.

              Comment


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

                Originally posted by Pentium4 View Post
                That looks like a rebranded Coolmax unit, or at least the same OEM. Maybe 200W with the ripple in spec. What brand is the fan that it uses?
                Looks like a GoldenTiger. Most Coolmax's are Longyi, they are both very similar, usually only told apart by the part number. GoldenTiger = GT, Longyi = LY.

                Comment


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

                  Originally posted by PeteS in CA View Post
                  200W seems pretty realistic.
                  Arguable.
                  Those heat sinks are paper-thin. I'd rate it around 100 Watts max continuous if you want to keep parts from overheating in there. With those output filters like that, the ripple will be out of spec on at least one rail even at over 50W.
                  Realistically, I would rate it.... trash

                  It uses some interesting red glue, though. Beats older Bestecs in that regard.

                  By the way, isn't this very similar to the PSU that just died in mariushm's father's PC? post $864 above

                  Comment


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

                    Golden Tiger like to use that red glue. I recon it could probably do 250W in spec, or maybe a little less if the fan stays real quiet. Even with those thin heat sinks, I've successfully pulled that from a few PSUs before. I've even manged 300W from one or two. It actually looks similar to a Bliss "350W" which will be in the 2013 el cheapo roundup. That one didn't blow up until I asked for 350W.
                    Last edited by c_hegge; 12-28-2013, 10:48 PM.
                    I love putting bad caps and flat batteries in fire and watching them explode!!

                    No wonder it doesn't work! You installed the jumper wires backwards

                    Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

                    Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

                    Comment


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

                      Originally posted by c_hegge View Post
                      Even with those thin heat sinks, I've successfully pulled that from a few PSUs before. I've even manged 300W from one or two.
                      But for how long is the question?
                      A few seconds to a few minutes isn't satisactory for me. If you ran it on the load tester for a day, then I say that's acceptable.
                      Also, how much heat is the PSU kicking out at that power level and how hot are the heat sinks? I bet you the output caps will bake quickly if the PSU is ran at that much power over an extended period of time. And I'm almost certain you can't get even a 100W out of the PSU without one of the rails getting out-of-spec ripple.

                      Comment


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

                        I usually run them on the tester for 10 minutes, or until the power draw levels off (indicating that the temperature has leveled off), whichever comes last. The Bliss I had was in spec the whole time on all rails (although it was getting close to limit on the 12V output at full load). I agree though, that it should run at a given load level all day in order to for it to be a conclusive test, but I often don't have all day to test a PSU.
                        Last edited by c_hegge; 12-28-2013, 11:44 PM.
                        I love putting bad caps and flat batteries in fire and watching them explode!!

                        No wonder it doesn't work! You installed the jumper wires backwards

                        Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

                        Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

                        Comment


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

                          Originally posted by c_hegge View Post
                          ... It actually looks similar to a Bliss "350W" which will be in the 2013 el cheapo roundup ...
                          The new year's fireworks are eagerly awaited by the masses .

                          Comment


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

                            Originally posted by TELVM View Post
                            The new year's fireworks are eagerly awaited by the masses .


                            I guess it's my turn to post something...
                            What I have for you: a Raidmax RX-380K (i.e. a Sun Pro KY-480ATX).

                            outside: https://www.badcaps.net/forum/attach...1&d=1388363334

                            label: https://www.badcaps.net/forum/attach...1&d=1388363334

                            top side (taken a few years back): https://www.badcaps.net/forum/attach...1&d=1388363334

                            another top side (a little more recent - you can see another cap has failed in there just from the PSU sitting in storage): https://www.badcaps.net/forum/attach...1&d=1388363334

                            primary side showing diodes in bridge rectifier and the bent leads on the parts attached to the heat sink: https://www.badcaps.net/forum/attach...1&d=1388363334

                            secondary side shot: https://www.badcaps.net/forum/attach...1&d=1388363334

                            botton side (solder side): https://www.badcaps.net/forum/attach...1&d=1388363334

                            This is probably the crappiest power supply I have around. The case is made out of paper-thin steel. The heat sinks are equally anorexic. Soldering on the bottom side is plain awful. Lots of loose solder balls came out when I first opened it. It's a miracle it didn't short out at the factory. The primary transistors have their leads so bent that they are nearly touching each other! As you can also see from the bottom-side picture, the separation between traces on the primary is very small. I'm pretty sure this thing never passed UL, CE, or any other safety marks. Then again, it's clear from the label the safety marks were forged. The wires are all 20 AWG (with 22 AWG for floppy connector) and completely unlabeled! (not a single safety agency or UL number in sight)

                            380 watts output??? Yeah right . It may not be very clear from the pictures, but the PCB has some serious "burn-in", and this was not caused by a stuck fan since the fan is spinning fine (although, I should note that the fan was quite dry... looks like it never saw lubrication from the factory). Speaking of which, the fan is a Te Bao Metallic Plastic model M802512M rated for 12V and 0.14A. IIRC, this PSU was powering a mediocre Athlon XP 1600+ system with a GeForce 5200FX video card and 1 HDD, so nothing too heavy.

                            Primary/input side:
                            Not much to talk about input filter. We have us two blue (but fake!) Y caps, and a sugar-cane-colored input choke . No X cap. Better than nothing, still.
                            Moving on... two bigger and two smaller diodes for the bridge. Too lazy to read part numbers, but I'm guessing 3A and 1.5A or 2A diodes. The two bigger diodes are always used, so this PSU should be capable of pulling 300W from the wall with these diodes (of course it won't, as you'll see from the rest of the parts list).
                            Also on the primary: 2x 200V 330 uF Metacon GK primary caps that read 200 uF and 196 uF on an ESR Micro V4. Primary transistors are a pair of 13007 BJTs in half-bridge configuration. Main transformer is size 33. 5VSB transformer is the standard cute small stuff you always find in all cheap PSUs. Speaking of 5VSB - it's that good old friend, the 2-transistor design . It doesn't have a critical capacitor, though.

                            Secondary/output side:
                            12V rail has a 12A 200V fast recovery rectifier. 5V and 3.3V rails share a single 20A 40V schottky . The 3.3V rail is derived from 5V rail in a linear fashion with a CEP51A3 (48A, 30V, N-channel MOSFET).
                            Output caps:
                            12V rail: 1x brown CS "LOW ESR" 16V 1000 uF cap placed after a PI coil.
                            5V rail: 2x JEE "LOW ESR" 10V 1000 uF caps (1x before and 1x after PI coil)
                            3.3V rail: 1x JEE "LOW ESR" 10V 1000 uF cap after PI coil.
                            5VSB: not exactly sure. I think 2x CS 16V 470 uF caps originally (1x before and 1x after PI coil), but one of them failed, causing the 5VSB to crazy with anything higher than 50 mA of load. I think I saw the auxiliary rail for the PWM controller (an AZ7500BP) go as high as 30V when this was going on. I recapped the failing CS cap with a questionable STONE 16V 470 uF cap out of a Philips TV that had other STONE caps of the same ratings failed. But it's a crap PSU, so why waste good caps on it? I just wanted to get it working again, which the STONE cap did. 5VSB is good for up to 1.5A of load now, though it does get warm with that load. Before you jump and scream at me... don't worry - I'm not going to put this PSU back in a PC ever again .

                            Actually, the case from this power supply is now housing the guts of a beefy HiPro HP-P2507F3P 250W PSU that a friend gave me.
                            Sorry for that wall of text above. Hope you liked this one
                            Attached Files
                            Last edited by momaka; 12-29-2013, 07:54 PM.

                            Comment


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

                              Great post! Thank you! Though I wouldn't bother warming my soldering iron for that thing...

                              Comment


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

                                I am curious why they call themselfs Sun Pro. Something in common with shining like a tiny sun when it starts burning and melting? It may start nuclear reaction one day if they try to squeeze too much power into that
                                Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                                Exclusive caps, meters and more!
                                Hardware Insights - power supply reviews and more!

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