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Is my psu broken?

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  • Is my psu broken?

    Hi. Just bought a new carputer. Took my old computer inside, unmounted the 12V psu and mounted it into the new cabinet, but I can't get it working. The led on the computer lights up just fine, but when I turn it on the CPU fan rotates for like 1 sek, stops, another 1 sek and then a third time. Something it just rotates one time, other times it keeps looping for ever. Hooked the computer to a standard 230V PSU and it worked great. The 12V PSU hasnt been exposed to any harsh environment and it hasnt been droppet in the floor or anything (cant see any damage on it either). I just want to conclude that it is the PSU which is broken before I put my carputer on the shelf ( ) while ordering a new one, waiting three weeks for it to arrive. Any ideas?

  • #2
    First thought is that the PSU doesn't output enough amperage for the new hardware.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

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    • #3
      How can that be? It previous carputer was an old Athlon socket 754 (dont got the CPU modell in front of me), with a 3.5inch IDE harddrive, hooked up to tons of USB devices. The new one is one of the cheaper mini-itx motherboards with a celeron CPU. The PSU is supposed to supply uptoo 160W.

      http://cgi.ebay.co.uk/Mini-ITX-M2-Ca...ht_4791wt_1165

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      • #4
        which motherboard?
        My Nearly Complete Car:
        http://www.mp3car.com/vbulletin/show...ed-car-pc.html

        Micro Control Center... Control Your Car Across the Internet
        http://www.mp3car.com/fusion-brain/1...-internet.html

        Website: (It's a work in progress, really. All my projects have taken me from ever really developing it.)
        http://paulfurtado.com/

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        • #5
          "asus mb itx-220 celeron 220 onboard intel945gc fsb533 ddr2 sata2 mitx retail (itx-220"

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          • #6
            are BOTH power connectors hooked up properly?
            My Nearly Complete Car:
            http://www.mp3car.com/vbulletin/show...ed-car-pc.html

            Micro Control Center... Control Your Car Across the Internet
            http://www.mp3car.com/fusion-brain/1...-internet.html

            Website: (It's a work in progress, really. All my projects have taken me from ever really developing it.)
            http://paulfurtado.com/

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            • #7
              Sure. Both the 4-pin and the 20-pin. The motherboard got a 24-pin instead of 20, but even with an adapter from 20- to 24- pins it made no difference.

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              • #8
                What are the PC and the power supply mounted to? How are you "pushing" the power "button"?
                My Nearly Complete Car:
                http://www.mp3car.com/vbulletin/show...ed-car-pc.html

                Micro Control Center... Control Your Car Across the Internet
                http://www.mp3car.com/fusion-brain/1...-internet.html

                Website: (It's a work in progress, really. All my projects have taken me from ever really developing it.)
                http://paulfurtado.com/

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                • #9
                  The motherboard is neatly screwed into the cabinet as supposed to. I first mounted the PSU right next to it as it is supposed to, but later took it out and placed in right next to the cabinet, but no difference. Power button is pushed as a regular computer, cables from the button to the pwr-switch on the motherboard. I also tryed using the power function on the PSU, connecting the PSU to the pwr-switch on the motherboard, and then hooked a cable from + to the ACC on the PSU (brilliant function which I have been using in my car), but the result was still the same.

                  Comment


                  • #10
                    Originally posted by Plecto View Post
                    How can that be? It previous carputer was an old Athlon socket 754 (dont got the CPU modell in front of me), with a 3.5inch IDE harddrive, hooked up to tons of USB devices. The new one is one of the cheaper mini-itx motherboards with a celeron CPU. The PSU is supposed to supply uptoo 160W.

                    http://cgi.ebay.co.uk/Mini-ITX-M2-Ca...ht_4791wt_1165
                    Did you actually look up the power draw for both those CPUs?
                    A Celeron is not necessarily lower power draw than an AMD unit.

                    I'm still thinking the PSU is underpowered for your hardware, and I will continue along that line of thinking until you can definitively state otherwise.

                    Post some specs.
                    Have you looked in the FAQ yet?
                    How about the Wiki?



                    Under normal circumstances, a signature would go here.

                    Comment


                    • #11
                      ITX-220

                      Cost Effective Solution for Nettop

                      Intel® Celeron 220 on board
                      Intel® 945GC/ ICH7 chipset
                      2 x DDR2 DIMM sockets support up to 4GB of system memory
                      High Speed Gigabit Lan connectivity
                      Mini-ITX Form Factor

                      CPU
                      Intel® Celeron 220


                      CPU Fan
                      - Dimension of Fan: 40*40*10mm
                      - Rated Speed: 5000±10% R.P.M.
                      - Voltage(V): DC 12V
                      - Maximum Air Flow: 5.57CFM
                      - Noise: 25.3dBA (Max. 27.5 dBA)
                      Chipset
                      Intel® 945GC
                      /ICH7
                      Front Side Bus
                      533 MHz
                      Memory
                      2 x DIMM, 4 GB, DDR2 533 Non-ECC,Un-buffered Memory
                      Dual Channel memory architecture
                      * Refer to ASUS or user manual for Memory QVL (Qualified Vendor List)
                      Expansion Slots
                      1 x PCI
                      VGA
                      Integrated Intel Graphics Media Accelerator 950
                      D-sub Max. resolution: 2048x1536x32Bppx75Hz
                      Maximum shared memory of 224 MB
                      Storage
                      Southbridge
                      2 xSATA 3 Gb/s ports
                      LAN
                      Realtek PCIE Gb LAN
                      Audio
                      VIA VT1705 6 -Channel High-Definition Audio CODEC
                      USB
                      6 USB 2.0 ports (2 ports at mid-board, 4 ports at back panel)
                      Special Features
                      ASUS MyLogo 2
                      ASUS CrashFree BIOS 3
                      ASUS EZ Flash 2
                      Back Panel I/O Ports
                      1 x D-Sub
                      1 x PS/2 Keyboard
                      1 x PS/2 Mouse
                      1 x LAN(RJ45) port
                      4 x USB 2.0/1.1
                      1 x COM port
                      6 Channel Audio I/O
                      Internal I/O Connectors
                      1 x USB connectors supports additional 2 USB ports
                      1 x CPU Fan connector
                      1 x Chassis Fan connector
                      1 x Speaker connector
                      1 x Chassis Intrusion connector
                      1 x Front Panel connector
                      1 x High Definition front panel audio connector
                      1 x 24-pin EPS 12V Power connector
                      1 x 4-pin ATX 12V Power connector
                      1 x TPM header (optional)
                      BIOS
                      8 Mb Flash ROM
                      AMI BIOS, PnP, DMI v2.0, Wfm2.0, SM BIOS 2.5, ACPI v2.0a
                      Accessories
                      User's manual
                      1 x I/O Shield
                      1 x SATA cable
                      Support CD
                      Drivers
                      English User's Manual
                      ASUS PC Probe II
                      Anti-virus software (OEM version)
                      ASUS Update
                      Form Factor
                      Mini ITX Form Factor
                      6.75 inch x 6.75 inch ( 17.1 cm x 17.1 cm )
                      Don't think that would tell you that much :S So I found these specs for the CPU aswell:

                      Essentials
                      Status Launched
                      Launch Date Q4'07
                      Processor Number 220
                      # of Cores 1
                      # of Threads 1
                      Processor Base Frequency 1.2 GHz
                      L2 Cache 512 KB
                      Bus/Core Ratio 9
                      FSB Speed 533 MHz
                      FSB Parity No
                      Instruction Set 64-bit
                      Embedded No
                      Supplemental SKU No
                      Processing Die Lithography 65 nm
                      Max TDP 19 W
                      VID Voltage Range 1.0-1.3375V
                      Package Specifications
                      TCASE 100°C
                      Package Size 35mm x 35mm
                      Processing Die Lithography 65 nm
                      Processing Die Size 77 mm2
                      # of Processing Die Transistors 105 million
                      Sockets Supported PBGA479
                      Halogen Free Options Available No

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                      • #12
                        I also assume that your psu is not delivering enough current. Keep in mind that the wattage on the psu is not always correct. Most of the times, the psu can only deliver 75% of its stated power (Watts). Also, the information you posted doesn't state the current drawn from the cpu which you should check. I have a hunch feeling is that the amd cpu requires less current than the new celeron cpu.

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                        • #13
                          if thats the same as an m2-atx power supply, then he has plenty of power for his system. however, it looks like a generic brand so nobody could really tell one way or the other how many amps it really has to give.

                          but try rotating the polarity on your POWon pin cable, even though a pc power button is just a contact switch, many times it still does matter if you put + to + and - to -

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                          • #14
                            are you supplying the power supply itself with enough power?

                            will need a 4A 12V input supply at least, anything less and you may be under powering the PSU

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                            • #15
                              but try rotating the polarity on your POWon pin cable, even though a pc power button is just a contact switch, many times it still does matter if you put + to + and - to -
                              Didnt make any difference, but how could it?

                              are you supplying the power supply itself with enough power?

                              will need a 4A 12V input supply at least, anything less and you may be under powering the PSU
                              I did think of that. First I used a 230V to 12V converter, but then I tryed hooking it directly up to a battery, but it made no difference.

                              So what kind of psu shoud I be buying?

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