Corsair vs650 random power off / reboot

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  • Akira81
    Member
    • Apr 2016
    • 12
    • Pescara
    #1

    Corsair vs650 random power off / reboot

    I have a problem with a power supply vs 650 (of those first version with the orange label) this to be clear:

    https://www.corsair.com/it/it/Catego.../CP-9020098-EU

    the power supply turns on but randomly turns off the pc

    immediately after you can turn on the PC and cross your fingers until the next shutdown / reboot.

    The 12cm fan runs well

    there are no swollen condensers, burns, brown areas

    some photos of the components inside:

    https://www.nexthardware.com/reposit...s_n.d_-61-.JPG

    https://www.nexthardware.com/reposit...s_n.d_-63-.JPG

    https://www.nexthardware.com/reposit...s_n.d_-64-.JPG

    https://www.nexthardware.com/reposit...s_n.d_-65-.JPG

    https://www.nexthardware.com/reposit...s_n.d_-67-.JPG

    https://www.nexthardware.com/reposit...s_n.d_-62-.JPG

    Can you help me in the repair? what components could i start checking inside?

    thanks in advance to who will reply
    Tags: None
    • Per Hansson
      Super Moderator
      • Jul 2005
      • 5895
      • Sweden
      #2
      Re: Corsair vs650 random power off / reboot

      Do you know which power supply turns off?
      Inside an ATX PSU are two supplies: the 5VSB and the main supply (3.3v 5v, 12v -12v)
      "The one who says it cannot be done should never interrupt the one who is doing it."

        Comment

        • R_J
          Badcaps Legend
          • Jun 2012
          • 9514
          • Canada
          #3
          Re: Corsair vs650 random power off / reboot

          Check the solder side of the board for poor solder connetions

            Comment

            • Akira81
              Member
              • Apr 2016
              • 12
              • Pescara
              #4
              Re: Corsair vs650 random power off / reboot

              Originally posted by Per Hansson
              Do you know which power supply turns off?
              Inside an ATX PSU are two supplies: the 5VSB and the main supply (3.3v 5v, 12v -12v)
              I'm not very expert ... the results of this tester can be useful to the verification you asked me?

              https://imgur.com/a/EZWunk1

              Does that 5.1 value that I see on the screen have to be monitored over time or can it be taken for good now?

                Comment

                • RethoricalCheese
                  Badcaps Legend
                  • Mar 2013
                  • 1514
                  • Estonia
                  #5
                  Re: Corsair vs650 random power off / reboot

                  VS650 has problems keeping 12V at.. 12V under load.
                  Some people report it dropping to less than 11V.

                  12V output capacitors are CapXon. Replaced them with rubycons. Not sure if it helped tho.

                    Comment

                    • sam_sam_sam
                      Badcaps Legend
                      • Jul 2011
                      • 6018
                      • USA
                      #6
                      Re: Corsair vs650 random power off / reboot

                      Can you post a picture of the bottom of this board

                        Comment

                        • Akira81
                          Member
                          • Apr 2016
                          • 12
                          • Pescara
                          #7
                          Re: Corsair vs650 random power off / reboot

                          Originally posted by RethoricalCheese
                          VS650 has problems keeping 12V at.. 12V under load.
                          Some people report it dropping to less than 11V.

                          12V output capacitors are CapXon. Replaced them with rubycons. Not sure if it helped tho.
                          The only capacitors that I see whit CapXon brand seem to be these 2 ....

                          http://imgur.com/a/zhwCb9u

                          did you mean that I only have to replace these 2 with equivalents but of the rubycons brand ????


                          Originally posted by sam_sam_sam
                          Can you post a picture of the bottom of this board
                          here's a pictire of the bottom of the vs650 board:

                          http://imgur.com/a/LUCEmmA

                          Thank you guys
                          Last edited by Akira81; 05-06-2020, 11:02 AM.

                            Comment

                            • Quaddro
                              Tukang Kentu
                              • Nov 2010
                              • 141
                              • Indonesia
                              #8
                              Re: Corsair vs650 random power off / reboot

                              random restart,according to my experience, due to faulty pwm chip in secondary.

                              https://easyload.io/f/mWXnR5ErXO/V_I...214100_680_mp4

                              Just replace the sitronix ic, st92429 pin 14 or with the equivalent wt7525 pin 14

                                Comment

                                • Akira81
                                  Member
                                  • Apr 2016
                                  • 12
                                  • Pescara
                                  #9
                                  [SOLVED] Corsair vs650 random power off / reboot

                                  after some time I can confirm that by replacing the ic with a WELTREND WT7525Y DIP-14P I solved the random reboot problems on this power supply.

                                  Let's hope this one I bought will last over time.

                                  Thank you all for your invaluable help

                                    Comment

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