Psu

Discussion in 'Power Supplies and UPS's' started by kevin2007, Aug 22, 2007.

  1. kevin2007

    kevin2007 Geek Trainee

    Likes Received:
    0
    Trophy Points:
    0
    --------------------------------------------------------------------------------

    Is it possible for a PSU to power up the fans, yet still be defective sometimes, and not produce enough power to boot the machine?
    HDD Seagate ST340016A 40GB + Radeon 7000 32MB VGA (PCI) Card
    All PCI empty
    [have a lot of problems, trying to eliminate 1 by 1]

    ANY ADVICE APPRECIATED

    HEC 250AR-PT 250W
    Total output: 250w
    Combined output: 3.3v + 5v: 150w
    Max Current: +3.3v=20A, +5v=25A, +12v=13A
    Safety Certificates: TUV, CE, NEMKO, CB, UL, CSA
    EMC: Complies with CISPR 22 230 VAC operation.
    Intel V.2.03 ATX Specification
    Size: H 86mm, W 150mm, D 140mm


    SiS 655FX
    P4S55FX+



    CPU
    - Socket 478, Intel Prescott Intel Pentium 4 Celeron
    - FSB 800MHz/533MHz

    Chipset
    - SiS 655FX+964L, Supports Hyper-Threading Technology

    Memory
    - Supports Dual Channel Technology
    - 4 x DDR DIMM slots
    - DDR 400/333/266
     
  2. donkey42

    donkey42 plank

    Likes Received:
    9
    Trophy Points:
    38
    yes

    as your system is a low spec, that PSU may power it, however, try using a simple cheap multimeter to check the output voltages both with the system assembled & switched on and with all equipment disconnected from the PSU

    and that PSU has a really low output on the 12V+ rail (13A)


    what are the results of the multimeter test (both connected & disconnected)

    BTW you may find that 1 or more outputs from the PSU is 0 (zero)
     
  3. kevin2007

    kevin2007 Geek Trainee

    Likes Received:
    0
    Trophy Points:
    0
    Hi, Thanks a million for the reply.
    I'l get a multimeter and post the results
    :) Thanks
     
  4. Tech

    Tech Padawan

    Likes Received:
    0
    Trophy Points:
    0
    Hey donkey.

    I was jsut wondering if there were any conventions for the number of amps going through teh rails in your average PSU?
     
  5. Big B

    Big B HWF Godfather

    Likes Received:
    145
    Trophy Points:
    63
    That information should be listed on the sticker on the side of the PSU.

    If a PSU doesn't provide enough juice to get the system going completely, a common sign is the fans spinning, but the motherboard not POSTing. You don't have a super high-powered system, but it's quite possible the PSU, while a fine unit, is simply incapable of providing adequate power for this system.
     
  6. kevin2007

    kevin2007 Geek Trainee

    Likes Received:
    0
    Trophy Points:
    0
    23/08/07

    Hi

    PSU

    Couldn’t get a Multimeter
    [live in Spain – closed for August, the country that is]
    Took Power supply from another machine
    No Branding, just MODEL LPT2
    [Googled, nothing]
    300 Watt
    Sounds healthy
    Turns the fans
    Good draught from PSU Fan

    Graphics Card
    Took from another PC

    RAM
    Took ddr400 from another machine

    HDD
    Put into another machine as Slave
    Run Chkdsk /r
    Comp Mgt > Disk Management
    Healthy NFTS 4 Partitions
    Copied file to it – No problem
    Seemed AOK


    BIOS
    Managed to get into BIOS sometimes
    [though most times it went to black screen]
    Loaded defaults
    Changed Boot Order Floppy/CD/Disk 0
    Disabled SATA

    POST
    Found Boot OK on IDE 0
    Operating System missing

    Install Operating System W2K from CD Boot
    Run straight through to ‘Starting Windows 2000
    Just hung

    Enable SATA in BIOS
    POST No Sata or Pata found
    Boot from CD
    F6 Raid disk from ASRock Website
    Installed from Floppy
    Run straight through to ‘Starting Windows 2000’
    Just hung

    Got back into BIOS
    Changed setting from PCI to AGP
    Rebooted
    No Change
    Found Boot OK on IDE 0
    Operating System missing
    Install Operating System W2K from CD Boot
    Run straight through to ‘Starting Windows 2000
    Just hung

    Boot from Seagate Disk Wizard cd
    [Downloaded from Seagate site]
    Loads
    Hangs after few minutes
    [Progress bar to about 1/3]


    NEXT STEP ??? not done yet
    Put Hard Disk into another machine
    Reformat to single Partition
    Put Disk back into machine
    Try to Install again
    Getting Desperate

    COMMENTS
    When it is doing something, like starting Windows Setup
    It goes like a rocket
    No Display problems
    Just wont do the rest.

    SETTINGS OBSERVED
    From BIOS
    CPU Temp 44C
    MB Temp 36C
    Fan Speed 3148 to 3207

    V Core [???] 1.574 to 1.590
    +3.30v 3.307v
    +5v 5.167v
    +12v 12.580 to 12.645v

    From POST
    HDD
    Cyl 19158
    Head 16
    Sector 255
    Size 40 GB
    LBA LBA
    32Bit ON
    Block Mode 16 Sec
    PIO Mode 4
    UDMA Mode 5

    PCI Devices
    On Board PCI Bridge
    OB IDE
    OB USB Controller IRQ 3
    OB USB Contoller IRQ 5
    Bridge VGA IRQ 11
    OB Multimedia Device IRQ 10
    OB USB Controller IRQ5
    OB USB Controller IRQ5
    OB Ethernet IRQ 5
    There are no duplicates here, if I have listed it twice, it is because it was listed twice

    When SATA is not disabled, it also shows Raid
    But I did not get the IRQ for it

    If it appears that I have listed some superfluous info here, it is because I think I am doing something silly
    Or missing the obvious

    I think I only have the CPU and the Motherboard left to go.
    I am in the wilderness there.

    I have an Emergency Boot CD that will give me a lot of Info about the computer, but a lot of it is over my head
    However, if someone can think of a Question, il get the info.

    I don’t expect miracles,
    [I have started praying for them though]

    I have tried everything I can think of
    Any thoughts will be welcomed like fresh air on a thick smoggy day

    Cheers
    Kevin
     
  7. donkey42

    donkey42 plank

    Likes Received:
    9
    Trophy Points:
    38
    as far as i can tell, your PSU is from a company called: Power Link International LPT2, i think this is their website

    BTW: have you tried reseting the BIOS / CMOS, failing that, i would say it is probably the PSU
     

Share This Page