Power supply (PSU) concerns

By truffles ยท 267 replies
Mar 5, 2002
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  1. 130123

    130123 TS Rookie

    Hi, newbie here ;)
    I'm facing a similar problem, my custom system is blue screening, randomly reboots etc.. and I have systematically been through every software/driver issue i can think of, but with no luck. I have basically replaced everything in my computer, except the PSU, I think this might be the problem, it's a 550w but its being used by a core 2 duo 2.40Ghz CPU, 2 X1950 PRO GPUs, MSI 975x MoBo, 2 HDs a DVD rom drive and 4 fans.
    I've tried removing a graphics card to lighten the load, but I'm still having frequent problems, mainly randomly rebooting. It seems fine unless my computers been on for more than 3 hours or until I play a full screen game like Oblivion or Rome:Total War, which leads me to believe that its and overheating problem, or too much strain on the PSU, I'm willing to replace any parts necessary to fix this problem, any thoughts?

    Btw Idle temps seem fine, so how can I see the temps of my CPU etc.. while I'm playing a game?
  2. Jack Tucker

    Jack Tucker TS Rookie

    How does a Hipro H-11-1010 rate for quality?
  3. Jack Tucker

    Jack Tucker TS Rookie

    How does Hopro 300 watt rate?
  4. benny464

    benny464 TS Rookie

    cant find schematic for dell w2600

    Can anyone tell me were I can find a schematic for a dell w2600? It has the problem that every one has been talking about. You turn it off and it does not want to come back on unless you unplug it and play around with it untill it comes back on
  5. 1cbtengr78

    1cbtengr78 TS Rookie

    I purchase a 400W Coolmax last month and used it to power:

    Dell Dimension 3000:
    Nvidia Geforec 6200 128MB
    8 x USB items

    It worked fine until I installed a 200GB WD 7200rpm as a second hard drive, along with a HDD cooling fan. I believe my 400W couldn't support all of these items because things like my graphics card cut out, then my mouse, etc. Today, I bought a 680W A Power PSU (I beieve it's generic) and everything is running fine.

    Is it possible to have so much wattage that I burn components to my computer? This is what I have in my setup now, and I thought 400W would suffice, but obviously not:

    Dell Dimension 3000:
    Nvidia Geforec 6200 128MB
    8 x USB items
    Maxtor 80G HDD
    WD 200G HDD
    1.2G RAM
    HDD Cooling fan
    (soon to come, Multimedia internal card reader)

  6. Thrudd

    Thrudd TS Member Posts: 47

    Hmmm .... USB ports drop a max of 500mA each so that would be a total of 4Amps from your 5V line at worst ..... That is a big chunk from the 5V rail if everything is being powered.

    As to too much wattage ..... Think of wattage as to how big your resevoir of power is .... you can have lots of reserve power and not use it without consequence. .... use close to its max and you will start having problems ....

    My suggestion is to do a power audit for everything.
    For each item list their amperage under their voltage.
    example.. USB Devce 5V @ 400mA
    Now total the amps needed for each voltage and compare those values to what the power supply can deliver.

    Dont forget the CPU and MB in your calculations.

    Also, just because it says 400W in big bold letters does not mean it is 400W ... read the manufacturers label very carefully. You may be surprised at who actually built the thing and what the real specs are. (this from the guy with the 400W .. no 325W .. oh wait .. 230 W supply)
  7. T_C_

    T_C_ TS Rookie

    Hey everyone, new poster, longtime fan of the boards here. I was wondering if someone can answer my question. First off, the specs:
    AMD athlon 64 4200+ 2.2GgHz Socket 939
    Hiper 580W PSU
    Sapphire Radeon X850XT GPU
    ASUS A8N32-SLi Deluxe MoBo
    Seagate Barracuda 7200.10 320Gb SATA HD (fried, not currently using)
    Hitachi Deskstar 320Gb 7200rpm SATA HD (as replacement)
    WD Caviar 80Gb IDE HD
    Corsair XMS Platinum 2Gb 184pin DDR memory

    Okay, here is my problem...When I originally built the computer around August last year, I had some problems that I assumed was a DOA from ASUS. The problem was no video on boot. I RMA'd both the video card and the ASUS Mobo and replaced them with the same models (it worked with the old video card and new MoBo as well). Immediately, I came across a problem with the new MoBo--it would not reset. Whenever I pressed the reset button on the case, it would freeze on the boot screen. In addition, when I turned off the power (from the case button) and turned it on later (leaving the PSU on) it would do the same thing. However, if I turned off the power to the PSU and then back on, it would boot normally. Soon after I figured this out, I had random crash/shutdown problems. I was able to narrow it down to the nVidia ethernet port. However, If I use the other Ethernet port (Marvell Yukon) it works normally so it is not a problem. Now, afetr these headaches, it is beginning to act up again. For some reason, sometimes (and now permanently) when I turn it on, there is no video. I moved the GPU around a bit in the slot, and it worked normally. For a while, I was able to get by with lightly wiggling the GPU in the PCIx16 slot during the boot and it seemed to work. One day, when I was in class, I came back to a frozen screensaver. With the numerous problems I have had before, it came as no surprise. When I booted, it could not find any boot record on the HD and I had to purchase another HD. I nearly lost all my data! From there, it got progressively worse--now it will not boot at all no matter how much jiggling and wiggling you do to the GPU. I decided to try some other things. I unhooked the SATA drive, loaded PCLinuxOS on a spare IDE drive and suddenly the PC started working again. I hooked the SATA drive up again...and no video on boot. So, I hooked up my SATA HD to an external enclosure/power supply, and it worked normally for a while. Now, it keeps getting worse and worse. It will not boot with the IDE nor with the SATA drives on external power (so it would just be powering the fans, MoBo, and GPU). 580W seems more than enough to power these things. I cannot figure out if it is a bad MoBo or a bad PSU, I'd like to find out before I have to spend hundreds, and perhaps before I tear the rest of my hair out over it. I've rebuilt this thing more times than I can count to ensure everything connected and hooked up right.

    Voltage readings from the ASUS diagnostic software is normal. Also, once I get it to work, it used to stay on for however long I kept the computer on for. The last time I got it to work, it loaded Windows normally for about 5 mins, then froze and shut down a few seconds later. I've tried everything I can think of while it still worked, every diagnostic looking for some kind of error and found nothing. Now it is a very expensive and frustrating paperweight!

    I do not know if this is MoBo or PSU, or something else! I figure if anyone can help me it'd be someone from these boards :) Thanks! --TC
  8. T_C_

    T_C_ TS Rookie

    I should also add I've reflashed to the most current BIOS and checked some unsuspecting things like my surge protector capacity and room's electricals. The GPU fan normally spins at full speed and then slows after POST, and the Keyboard lights up and blinks (LED). Now, the GPU fan stays full with no video, the monitor detects nothing, but the keyboard still blinks, etc. like a normal boot. I've switched the monitor input/GPU output, etc. with no results. I'm baffled!! I thought it could be the GPU but I replaced it early on when the same problem occurred.
  9. steeler sandy

    steeler sandy TS Rookie

    Emachine T6420 power supply upgrade?

    Hi all, I have an Emachine T6420 with a 300 watt power supply. I want to install a different video card, as the Mobo card sucks, and I want to install a firewire card. My mobo documentation states that if I wish to install any new hardware, I will need to add a more powerful psu. Problem is, I cannot seem to find one that is compatible with this machine. I eventually want to add a pcie video card when I can afford one, but I really want to have the psu figured out first. I have looked all over the net and can find no clear indication which brand, size, etc. would be compatible. Any ideas?

    Thanks in advance.

  10. Thrudd

    Thrudd TS Member Posts: 47

    So when it was working the voltages were normal acording to the MB diagnostic ... Hmmm ....Do you have the capability to measure thsoe voltages yourself? If you do, check them after the crash ....
    Another thing to check, if you can is temperatures.

    This looks to be either a PSU issue with a failing component and the safty kicking in OR something is going into thermal overload and crashing the PSU. It is doubtful that you get two bad parts in a row (MB or VID) but anything is possible.

    Just checked a NA review site .... seems the NA version does not include PFC of any sort ... so if you have power issues in your area .... or had a power issue .. you leave it on for very long periods of time .... then there is a good chance something may have happened ... unless you are running your power through a UBS then I have no clue....
  11. manja

    manja TS Rookie

    How do i know what is the right wattage for the pc

    how do i know what is the right wattage for the pc...
  12. iceboxx11

    iceboxx11 TS Rookie

    hi i'm new here and i need help...

    i'm new here and i really need your help i bought this board VI35L. i don't know what kind of memory shall i use,, i got DDR 2700 and DDR333..
  13. iSolutions

    iSolutions TS Rookie

    Dell W2600 LCD TV Power Issue

    Dell has become well aware of this issue and is working to resolve it in the best way possible. You will need to join the Dell.com forum and send a private message to the moderator, Dell-ChrisM. He has worked to replace many of these LCD TVs both in and out of warranty. I am having a referb shipped to me in 5-7 business days and my unit has been out of warranty since March '07. Good Luck and I hope this helps.
  14. binhviphaco

    binhviphaco TS Rookie


    hello every body
    I need diagram of PC power supply
    model FSP 200-601U
    Pls show me where I can find
    Thank you !
  15. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    All PC switching power supplies are basically the same. What are the symptoms of the failure? You will need to load the supply to be able to read the output voltages properly. An inexpensive PC Switching Power Supply Tester can do all the checks for you. It can tell you if the supply is dead, if you're missing one or more voltages or if the supply is going into over-voltage/over-current protection

    Here is a PS Tester I own:


    ATX Schematic (200 watt):

  16. Tedster

    Tedster Techspot old timer..... Posts: 6,002   +15

  17. wisman

    wisman TS Rookie

    Power supply thermistor failures

    Has any one had experience with the Thermistor failing on a power supply, I have had 3 failures. 2 of them on a Diablotek 550W and one on a cheap 450W no namer. I understand the purpose of the Thermistors function of limiting the inital rush of current, however I find it odd for the componet to burn up rather than to blow a fuse. Any similar experiences anyone can share and what you found out would be appreciated. BTW, I have an 850w power supply on the way; even though when I add up the wattage of all my drives, pci boards, it comes to something in the reange of 430 to 450 watts.
  18. Mictlantecuhtli

    Mictlantecuhtli TS Evangelist Posts: 4,345   +11

    The Bargain Basement Power Supply Roundup

    I actually agree with Tedster (is that the first time?), better not try to save that $30 on a "nameless" PSU.

    What I don't agree with many posters here, however, is the PSU capacity. But who listens to me anyway.
  19. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    If the thermisters are failing, are you using a decent surge protector? I use a 1000 watt APC UPS
  20. narin

    narin TS Rookie

    does it mean that if the post fails the system is not receiving enough power supply from smps or something else. i am not sure please advise.

    i tried the same smpson adifferent system and it post was successful. I am bit confused is the board or the PSU. but i am bit sure that mother board receives power the post is not succressful as there was no beep sounds.
    any advise appreciated
  21. Lannie

    Lannie TS Rookie

    My PC Specs:
    Pentium 4 2.8Ghrz (2 cpus)
    GeForce FX 5600 256mb
    160Gig Seagate Barracuda SATA drive
    512mb ram

    I currently have a 500watts orion power supply. Is it enough?
  22. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    Of course it is enough ;)
  23. narin

    narin TS Rookie

    Thankyou very much. Yours options are very much appreciated.
    First I checked the power output of the SMPS output whether it is delivering the required voltage.
    2. Then removed the RAM and checked for beepsand display3. since it is onboard no changes done.
    3. I removed all the connected peripherals and connected one by one
    4. I removed the cpu fan connector to motherboard for the beept to occur.
    5. Finally I did a CMOS reset. ,i short the 2 pins of my motherboard.
    6. Now my system is up and running.

    My solution to my questionaire which I raised some times back.

    I hope my step by step analysis could help someone.
    Thankyou anywaf for the support.
  24. lmissry

    lmissry TS Rookie

    Will any PSU's work?

    Wow, I thought I was the only one who has PSU problems.

    I have 2 eMachines....I know, I know, they are cheap.

    But both eMachines have burnt out the PSU's in the last few months.
    I replaced one by purchasing a replacement on-line.

    But my T2642 now also needs a new PSU. Can I simply use any ATX PSU?
    I have a few laying around in some old computers?

    Basically, can I use any power supply that will fit and plug into my computer as long as it is 250 - 350 Watts? Or, do I need to pay closer attention to the other specs of teh PSU?
  25. Daveskater

    Daveskater Banned Posts: 1,687

    Hello, lmissry, and the countless other new members in this thread, but mainly lmissry, and welcome to Techspot :wave:

    Please take a moment to read the following threads to make your experience here as enjoyable as possible :)

    Message for all newcomers

    SNGX1275's Guide to making a good post/thread

    The Techspot FAQ

    If you could take a minute to fill in some of your profile information that would be helpful to all members of the forum :)
    Knowing someone's location in the world can be extremely helpful, even if you just put a country.

    Also remember to post any problems or questions that you have in the appropriate forums

    With regards to your question, you could use any PSU as long as it is the same standard as the old one and has enough power and connectors to power your pc. eMachines are known for using cheap PSU's hat blow and usually take out the motherboard too.

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