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New Delta DPS-700FB-1 A won't run

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    #1

    New Delta DPS-700FB-1 A won't run

    I just received the identical unit pictured here . The pictures don't do it justice. It is beastly to behold and requires a 10x magnifier to appreciate the complexity of the circuitry. It has a PIC16C717 8-bit MCU on that side board behind the output wiring in the second picture. That board alone is a real jewel. Beautifully crafted.

    The Problem

    Brand new, will not start.

    The fan bumps a bit for 1 spin. +5VSB is on and correct.

    Loaded it with 2 hard drives and another fan. Fans spin 1 time. Voltages all bounce up a bit then shut down in < 1/2 sec. I have had it to the point where the voltages are oscillating/pulsing near what they should be at perhaps 4 cycles per second.

    What am I missing? Does this NEED to be hooked to mobo to work? Is there a sense voltage it needs to see?

    Toast
    veritas odium parit
    Tags: None
    #2
    Re: New Delta DPS-700FB-1 A won't run

    I would hook mine up and jumper it to tell you, but I am not at the same house as it, and won't be until tomorrow.

    I do know that this unit has 12v sense on the 8pin cpu connector. Don't know if it would need to be hooked up to a computer to work though. May be worth a try. Make sure there are no shorts on the soldering, make sure if you took out the second pcb out that you connected the long "rainbow" connector, too, and it is seated all the way down. When I put it back together it wouldn't even start because this wasn't seated all the way down.
    Last edited by 370forlife; 10-01-2009, 06:17 PM.

    Comment

      #3
      Re: New Delta DPS-700FB-1 A won't run

      It's possible that there's a minimum load requirement for the 3.3v rail. The DPS-450CBs I just got do, and that's something the hard drives/fans wouldn't give you.

      Comment

        #4
        Re: New Delta DPS-700FB-1 A won't run

        It's going into protective shutdown. Most likely you're not meeting minimum load requirements, or there's a problem with what you have connected.

        Comment

          #5
          Re: New Delta DPS-700FB-1 A won't run

          Those are usually OEM units for Gateway servers.
          Probably has server type minimum load requirements and needs a mobo to run.

          I have one around here somewhere that I use to test server boards.
          Never tried it with just drives.
          If I get a chance I'll play with it some today and report what happens.
          .
          Mann-Made Global Warming.
          - We should be more concerned about the Intellectual Climate.
          -
          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
          - Dr Seuss
          -
          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
          -

          Comment

            #6
            Re: New Delta DPS-700FB-1 A won't run

            >It's going into protective shutdown. Most likely you're not meeting minimum load requirements, or there's a problem with what you have connected.

            i agree with this.
            it's chunky 700w supply and you're not really loading it enough.

            out of (lower part) range, so to say.

            Comment

              #7
              Re: New Delta DPS-700FB-1 A won't run

              With 2,3,4,5 HDD and no Mobo -> No Start.
              With P3 board + 2 HDD -> No Start
              With Supermicro X7DAL-E [with one CPU] and no drives -> Starts fine.
              -
              Appears to need load on CPU +12v Rail to start.
              - The 2x4 [8-pin] EPS12V connector.
              .
              Mann-Made Global Warming.
              - We should be more concerned about the Intellectual Climate.
              -
              Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
              - Dr Seuss
              -
              You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
              -

              Comment

                #8
                Re: New Delta DPS-700FB-1 A won't run

                Got it!

                I had loaded all the legs with various high-power, low ohm resistors. It would pulse voltages but still wouldn't start.

                On a whim I tried loading the +5VSB with about 100mA and voilà!

                Removed all the loads and tried loading each voltage individually.

                Results:
                It's necessary to load the +12V on any connector with about 400-500mA and the +5VSB with about 100mA. No other loads attached and it runs.

                Experimentation shows:
                Hard drive(s) won't do. Evidently the +12V connection doesn't present any load to the PSU initially.

                3 - 80mm fans will do it. Start about 500mA, run 350mA.

                Voltage Measurements:

                +5.05VSB
                +3.33V
                +5.08V
                +12.06
                -12.0
                +4.52PG (gray)

                Thanks to everyone who offered suggestions and their assistance!

                Toast

                EDIT: Been working on typing this up for a while. Didn't see your post PC until now. Thanks!
                veritas odium parit

                Comment

                  #9
                  Re: New Delta DPS-700FB-1 A won't run

                  [Not necromancy - related posting]

                  370forlife has had a similar (no start) problem when connected to a system in this thread:

                  https://www.badcaps.net/forum/showthread.php?p=90423
                  veritas odium parit

                  Comment

                    #10
                    Re: New Delta DPS-700FB-1 A won't run

                    eh, no-load startup issues are not the same as issues with EVERYTHING hooked up.

                    Comment

                      #11
                      Re: New Delta DPS-700FB-1 A won't run

                      It says -SIMILAR- !!

                      Back on Ignore.

                      GD it!
                      veritas odium parit

                      Comment

                        #12
                        Re: New Delta DPS-700FB-1 A won't run

                        didn't look simillar to me.
                        Last edited by i4004; 12-21-2009, 04:59 PM.

                        Comment

                          #13
                          Re: New Delta DPS-700FB-1 A won't run

                          yeap...not simillar at all, his psu was working ok
                          https://www.badcaps.net/forum/showpo...9&postcount=14

                          Comment

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