Announcement

Collapse
No announcement yet.

No name/brand diode split in half/exploded cap

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    No name/brand diode split in half/exploded cap

    This is literally a no name/brand power supply. I got this power supply as "it should work". Good thing I check everything before I use it.

    Notice the blown in half diode and 47uF 50V cap that unravelled itself.

    I might repair it just to learn something, but the only parts I'll save are the fan screws and maybe a few resistors.

    All caps are JEE brand.
    Attached Files
    --- begin sig file ---

    If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

    We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

    Please do not post inline and offsite as they slow down the loading of pages.

    --- end sig file ---
    Tags: None
    #2
    Re: No name/brand diode split in half/exploded cap

    It's a Sun Pro. I can see some heat damage on the PCB around that area, although it may still be repairable
    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

      #3
      Re: No name/brand diode split in half/exploded cap

      Does anyone know where to get an ID of CSA markings? It's sort of the equivalent of the UL (Underwriters Laboratory) marking. UL has an online database, I couldn't find anything of the sort for CSA.
      "We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."

      -Leonid Brezhnev (On the Yom Kippur War)

      Comment

        #4
        Re: No name/brand diode split in half/exploded cap

        http://directories.csa-international.org/

        No results for 181613 so it's probably faked.

        Comment

          #5
          Re: No name/brand diode split in half/exploded cap

          Seen this platform before, i have one lying around somewhere. It's fairly solid if you put in good caps and good secondary diodes, it'll do 400W as the transformer and inductor are big enough. Just check that the primary transistors are 13009s.
          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

            #6
            Re: No name/brand diode split in half/exploded cap

            Originally posted by Th3_uN1Qu3 View Post
            Just check that the primary transistors are 13009s.
            I see 13007-2 (x2) and 10401 (with a F symbol - probably Fairchild).

            400W is 200W more than I will ever need for my purposes.
            --- begin sig file ---

            If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

            We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

            Please do not post inline and offsite as they slow down the loading of pages.

            --- end sig file ---

            Comment

              #7
              Re: No name/brand diode split in half/exploded cap

              13007s will give about 300W given that the output diodes are adequate (efficiency is kept high). Use at least 30A rectifiers on all rails and it should do 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: No name/brand diode split in half/exploded cap

                Originally posted by b700029 View Post
                http://directories.csa-international.org/

                No results for 181613 so it's probably faked.
                Either that or the directory is incomplete. I couldn't find 224353 (My PSU).
                "We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."

                -Leonid Brezhnev (On the Yom Kippur War)

                Comment

                  #9
                  Re: No name/brand diode split in half/exploded cap

                  Originally posted by c_hegge View Post
                  It's a Sun Pro. I can see some heat damage on the PCB around that area, although it may still be repairable
                  Confirmed.
                  The 7700 on the transformers gives it away.

                  I have a Raidmax RX-380K (Sun Pro KY-480ATX) that looks almost exactly the same as yours but with even more undersized components. Many of the caps in it are cooked, which shouldn't be surprising as there's heat damage on almost the entire area of the PCB. Blame the tinfoil heatsinks for that.
                  IMO this PSU is a complete piece of junk not worth fixing. That aside, mine does have a few resistors and coils in it that may come handy for other PSU repairs, so I'm still keeping it. At least yours has input filtering.

                  By the way, it looks like the 5vsb circuit committed suicide in yours. Probably went overvoltage and that's why you see that small exploded cap.

                  Comment

                    #10
                    Re: No name/brand diode split in half/exploded cap

                    On the split rectifier are the letters "FR" for Fast Rectifier, and it appears to be a 1A unit, and hopefully, the number at the end (e.g. 107) is still readable.
                    If this number cannot be read, you can safely use a FR107.
                    My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

                    Comment

                      #11
                      Re: No name/brand diode split in half/exploded cap

                      I have a logitech brand psu for fiddling around with electronics when I need a higher current. It seems to have a similar board, I will go take a look at what the model of it is, incase you need me to read parts

                      -Ben
                      Muh-soggy-knee

                      Comment

                        #12
                        Re: No name/brand diode split in half/exploded cap

                        Ok it appears that mine has a smaller primary heatsink on it, but its rated for "500w"


                        Anyways, the 5vsb circuit looks to be identical, so I will take a look at it and reply what stuff I find.

                        -Ben

                        EDIT: sorry i forgot, its a logitech PS500AC
                        Last edited by ben7; 12-05-2011, 04:02 PM.
                        Muh-soggy-knee

                        Comment

                          #13
                          Re: No name/brand diode split in half/exploded cap

                          Don't think Logitech ever made computer PSU. Maybe Logisys.
                          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

                            #14
                            Re: No name/brand diode split in half/exploded cap

                            Ok, the diode that blew up is actually a FR107 on mine. Also note that in the 4th picture he gave us, the 100 ohm resistor next to the middle transformer is toasted a bit.

                            Two interesting things are, one, his psu has two 470uF input caps when mine has two 680uF ones. Second, his bridge rectifier is made of an assortment of diodes, mine is just 4 of the same type(large barrel).

                            -Ben
                            Last edited by ben7; 12-05-2011, 04:37 PM.
                            Muh-soggy-knee

                            Comment

                              #15
                              Re: No name/brand diode split in half/exploded cap

                              Originally posted by Th3_uN1Qu3 View Post
                              Don't think Logitech ever made computer PSU. Maybe Logisys.
                              Heh, your right, sorry my mistake, its a logisys

                              -Ben
                              Muh-soggy-knee

                              Comment

                                #16
                                Re: No name/brand diode split in half/exploded cap

                                In that case it's a keerda built unit. This one is a sunpro. They use similar designs, as do most small, cheap chinese manufacturers.

                                Comment

                                  #17
                                  Re: No name/brand diode split in half/exploded cap

                                  Originally posted by 370forlife View Post
                                  In that case it's a keerda built unit. This one is a sunpro. They use similar designs, as do most small, cheap chinese manufacturers.
                                  Heh, thats strange, cause the circuit boards are almost exactly the same, but a few of the components are different.

                                  -Ben
                                  Muh-soggy-knee

                                  Comment

                                  Previous template Next
                                  Working...
                                  X