Xilence XP600 (bad PG signal, blown resistor)

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  • 6ot4hr
    Senior Member
    • Oct 2014
    • 87
    • Croatia
    #1

    Xilence XP600 (bad PG signal, blown resistor)

    Hi guys, I recieved two Xilence XP600 PC power supplies that are bad. Problem is on PG (power good) pin, it stays low all the time, normally it should be +5V. Power supply gives all voltages +3.3, +5, +12, -12 ok and it works under the 12V load with no problems. Upon inspection i noticed component R315 being blown on both boards, one completely gone, other one blow in half. Can someone post a schematic of Xilence XP600, or tell me what value R315 should be.

    Hope someone can help me, thanks again!!!
    Attached Files
    Last edited by c_hegge; 03-10-2015, 04:37 AM. Reason: Attached images locally
    Tags: None
    • stj
      Great Sage 齊天大聖
      • Dec 2009
      • 30937
      • Albion
      #2
      Re: Xilence XP600 (bad PG signal, blown resistor)

      looks familiar.
      you have other problems.
      check d308 and c314 for shorts.

        Comment

        • c_hegge
          Badcaps Legend
          • Sep 2009
          • 5219
          • Australia
          #3
          Re: Xilence XP600 (bad PG signal, blown resistor)

          Don't use imgur or any other 3rd party image hosting. Upload pictures here as attachments.
          Last edited by c_hegge; 03-10-2015, 04:37 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

            • 6ot4hr
              Senior Member
              • Oct 2014
              • 87
              • Croatia
              #4
              Re: Xilence XP600 (bad PG signal, blown resistor)

              Originally posted by stj
              looks familiar.
              you have other problems.
              check d308 and c314 for shorts.
              D308 in diode test mode shows voltage drop of 0.6 V, 1.1V (reversed polarity), C314 has 28kohm resistance...
              I was backtracking the +5V voltage to PG pin, it goes from +5V rail, over 0ohm resistor, to 1kohm resistor and to a PS224U, on 1kohm resistor there is +5V, on other side of it theres 0V, measured it with multimeter it shows 1kohm, but voltage doesn't pass over it. Tried bypassing it with same value resistor and suddenly there is +12V on PG pin

              Think i have to dig deeper

                Comment

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