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Rexpower PL-400 rebuild

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    #61
    Success!

    SUCCESS!

    It turned out that there were two problems The first was another solder blob shorting the 12v rail. The second was an incompatible transformer. I replaced it with another 35 size from another dead PSU. Put it on the tester and it fired right up. The 12v was a little high at 12.6, probably due to not having much load, but all the other rails looked fine.
    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

      #62
      Re: Rexpower PL-400 rebuild

      cool. how did u make the big text are you gonna make a new label for the psu reflecting its awesomeness? like SUCCESSPOWER 700w PSU?

      Comment

        #63
        Re: Rexpower PL-400 rebuild

        Congratulations! Well done!

        I have never replaced transformer or switching transistors in a power supply.. Maybe one day I will find the courage and try it.

        Comment

          #64
          Re: Rexpower PL-400 rebuild

          Originally posted by shovenose View Post
          cool. how did u make the big text are you gonna make a new label for the psu reflecting its awesomeness? like SUCCESSPOWER 700w PSU?
          Here is how you change the text size. I'll just stick with my "C H PC Power MOD-400" Label
          Attached Files
          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

            #65
            Re: Rexpower PL-400 rebuild

            More official-looking model number, maybe rpm400atx (rexpower modded 400w atx)Not to be confused with diablotek rpm series

            Comment

              #66
              Re: Rexpower PL-400 rebuild

              That 12v rail is going to be fine if you use the power supply in a Pentium 4 or anything newer than that. Just don't try it on an AXP.
              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

                #67
                Re: Rexpower PL-400 rebuild

                Originally posted by Th3_uN1Qu3 View Post
                That 12v rail is going to be fine if you use the power supply in a Pentium 4 or anything newer than that. Just don't try it on an AXP.
                Oh, What? That's why I beefed up the 5v rail so much, so it could handle systems that use it for CPU power. Oh well...
                Last edited by c_hegge; 11-26-2010, 12:41 AM.
                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

                  #68
                  Re: Rexpower PL-400 rebuild

                  If it's already at 12.6 while the other rails are reading normal, think of what would happen when you load up the 5v rail only. Most parts will handle up to 15 volts, but don't trust ALL of them to be able to do so.
                  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

                    #69
                    Re: Rexpower PL-400 rebuild

                    I did another run on the tester, and what I failed to notice last time is that, although this is a single rail PSU, the tester shows 12.3v on 12v1 and the 12.6v is on 12v2, so I'm begining to think it might be the 12v2 meter in the tester. The 5 and 3.3v rails showed 5.1 and 3.3v respectively.
                    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

                      #70
                      Re: Rexpower PL-400 rebuild

                      At 12.3 it's well in spec. Drop it into a spare computer and see how it does. Use a regular multimeter to read the rails.
                      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

                        #71
                        Re: Rexpower PL-400 rebuild

                        Unfortunately, I don't have a spare PC. That's why I'm building a load tester.
                        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

                          #72
                          Re: Rexpower PL-400 rebuild

                          If you lived in Greece I would give you old p4 PCs and psus with bad caps to play with.

                          There are PLENTY of them here!

                          Comment

                            #73
                            Re: Rexpower PL-400 rebuild

                            After all that it's still only 200W! If I attempt to pull any more than 10A from the 5 and 3.3v rails and 5A from the 12v, the OPP shuts it off!
                            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

                              #74
                              Re: Rexpower PL-400 rebuild

                              Congratulations. It seems I have the very same power supply. it succumbed to a dead short in a HDD and will now only give five volts. Poking my MM in the CEF02NG transistor doesn't show any life. Could it be as simple as replacing that?


                              939 DualCore AMD Opteron, 1800 MHz (9 x 200)
                              Abit AN8 / Fatal1ty AN8 SLI Series
                              3072 MB (PC3200 DDR SDRAM)
                              ATI Radeon HD 4300/4500 Series (1024 MB
                              Lian LI Aluminium mesh case

                              Comment

                                #75
                                Re: Rexpower PL-400 rebuild

                                Originally posted by c_hegge View Post
                                After all that it's still only 200W! If I attempt to pull any more than 10A from the 5 and 3.3v rails and 5A from the 12v, the OPP shuts it off!
                                Try going a bit lighter on the 5v/3.3v and heavier on the 12v.

                                Comment

                                  #76
                                  Re: Rexpower PL-400 rebuild



                                  KAAA...BLOOEY!

                                  Could it be as simple as replacing that?

                                  Nope


                                  939 DualCore AMD Opteron, 1800 MHz (9 x 200)
                                  Abit AN8 / Fatal1ty AN8 SLI Series
                                  3072 MB (PC3200 DDR SDRAM)
                                  ATI Radeon HD 4300/4500 Series (1024 MB
                                  Lian LI Aluminium mesh case

                                  Comment

                                    #77
                                    Re: Rexpower PL-400 rebuild

                                    Originally posted by c_hegge View Post
                                    After all that it's still only 200W! If I attempt to pull any more than 10A from the 5 and 3.3v rails and 5A from the 12v, the OPP shuts it off!
                                    Then trace the OPP line and reconfigure it. It uses a SG6105, doesn't it?
                                    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

                                      #78
                                      Re: Rexpower PL-400 rebuild

                                      Are you sure it is the OPP that is shutting it down and not something else?

                                      For example, check all the voltages seconds before it stops working. It might be UVP/OVP.

                                      Comment

                                        #79
                                        Re: Rexpower PL-400 rebuild

                                        Originally posted by goodpsusearch View Post
                                        Are you sure it is the OPP that is shutting it down and not something else?

                                        For example, check all the voltages seconds before it stops working. It might be UVP/OVP.
                                        Thats what I was thinking, maybe he was crossloading it by putting too high of a load on the 5v/3.3v and not enough on the 12v.

                                        Comment

                                          #80
                                          Re: Rexpower PL-400 rebuild

                                          No chance it's UVP/OVP, they are set to such obscene values that they basically don't exist.
                                          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

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