System shuts down

pythagoraspythagoras
edited February 2004 in Hardware
Hi guys,

I have an epox rda+. This has been running fine for 10 months oc'd, recently the system shuts down, not a restart. Going to default settings and the shutdown stops.

However at default settings the system shutsdown when playing ut2k3 or ut2k4 demo.

So the question is do you think this is a psu problem or mobo?

Some of the caps round the vrm's have what looks like a growth on the top, but caps aren't bulging(and I dont know if that was there before. 3.3volt is showing as 2.7.

Regards

John.

Comments

  • leishi85leishi85 Grand Rapids, MI Icrontian
    edited February 2004
    i think it's more PSU related, and as for your question about the +3.3v line, it's not actually the +3.3 it's the vmeme voltage, if u don't believe me, try changing vmem to 2.9v and u will see the +3.3 reading change to 2.9
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited February 2004
    Can you take a pic of the caps? They should not have anything on them. Also, don't touch the growth, because it's either corrosion or leaked electrolyte. It's possible that it could give you a nasty chemical burn, depending on what it is.

    I suspect the board, but if the caps have burst, it probably started out as a PSU problem.
  • pythagoraspythagoras
    edited February 2004
    3.3v line showed 2.8s when I increased the ddr volts to 2.9, I have taken pics of caps and can email those to you.

    In the mean time I will instal mbm5 and see if I can get better volt readings than sisoft sandra is giving me.

    Regards

    John.
  • pythagoraspythagoras
    edited February 2004
    Hope this attaching works.
  • pythagoraspythagoras
    edited February 2004
    Sorry about the size of the pics :banghead:

    Will do better next time :wink:

    Regards

    John.
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited February 2004
    Yeah, it looks like the caps are dead/dying to me. I'd replace/rma the board, and get a new power supply.
  • pythagoraspythagoras
    edited February 2004
    Hi Geeky1,

    Will rma, what problems with the psu could cause the caps to deterioate like that?

    leishi85, your sig says fold fold fold, you F@H then?

    Regards

    John.
  • leishi85leishi85 Grand Rapids, MI Icrontian
    edited February 2004
    yes, i do folding@home, currently have 18139 points
    why u ask?
  • pythagoraspythagoras
    edited February 2004
    Hehehehehehe,

    I take it pythagoras dosnt ring a bell then :eek3:

    I'm the admin over at the folding community forums :thumbsup:

    Regards

    John.
  • leishi85leishi85 Grand Rapids, MI Icrontian
    edited February 2004
    hehe, sorry, i rarely visit the folding community forums, if i ever get off this forum, i ill make sure i pay a visit over there.
  • ShortyShorty Manchester, UK Icrontian
    edited February 2004
    Latecomer to this thread.. but :eek:

    Thats the same as my 8RDA+ did, right before it blew a fet and died a death on me :rant:

    RMA it John :)

    Ps.. you tried the UT2004 demo yet! :eek:
  • pythagoraspythagoras
    edited February 2004
    Hi Shorty,

    Will be rmaing this board. Played 15 minutes of ut2k4 before the system shutsdown :grumble: Game play seems much more like UT :vimp:

    Regards

    John.
  • muddocktormuddocktor
    edited February 2004
    Yeah, those caps are definitely toast, John. I had a Soyo board do that to me before and I've seen it recently on several KT7 boards. You definitely want to get that board out of service immediately as there is a chance it could take other components out too. If you see even the slightest bulge in the top of an electrolytic or any stains on it anywheres, it's time for replacement.
  • KingFishKingFish
    edited February 2004
    Do you have software in your system that does an automatic shutdown if temps reach a certain point. Your bios may also have that feature integrated too. Check your bios to see if you have it and it's enabled. Run your system on a 100% load and carefully watch the temps to see if that temperature is reached.. But, as the others said, the caps are going south anyway and you'd be better off shutting it down for risk of losing other components before it's too late.

    KingFish
  • mmonninmmonnin Centreville, VA
    edited February 2004
    What would be more important with caps like this is something that will shut down the comp when voltages get too low. MBM will give a siren I know but not sure if it will shut the computer down.

    The PSU may cause something like that. Poor quality caps will do that after time. Might want to test the PSU in another system to see if its giving low voltages like than or if its just the dieing caps causeing low voltages.

    Good to see you John.
  • FAH_WWFAH_WW Training in Indianapolis, IN
    edited February 2004
    Those caps are well and truly blown :|
  • polarys425polarys425 Harrisonburg, VA
    edited February 2004
    very familiar sight..... ive replaced quite a few swelled/leaking caps on Abit KA7's and KT7's, as well as a Gigabyte board that was given to me.

    the cap swelling is most likely not a fault of the PSU, but rather the fact they were incorrectly manufactured. they lack and additive in the electrolyte that prevents the formation of hydrogen gas, thus they swell and leak.


    should you not be able to RMA it, they can be replaced.
  • LeonardoLeonardo Wake up and smell the glaciers Eagle River, Alaska Icrontian
    edited February 2004
    pythagoras wrote:
    Hehehehehehe,

    I take it pythagoras dosnt ring a bell then :eek3:

    I'm the admin over at the folding community forums :thumbsup:

    Regards

    John.

    We are honored for you to join Short-Media! Please stay.

    Those capacitors are on their way out. Looks like they experienced fluid leakage, hence the corrosion.
  • MJOMJO Denmark New
    edited February 2004
    They even look similar to the bulging green caps on my KT7A-Raid.
    Probably the same manufacturer.
  • pythagoraspythagoras
    edited February 2004
    Good news and bad news.

    When I took the board in for rma there was a component near pci slot 6 that was totally blown, and they said epox wouldnt honour the warranty because of the burn marks :mad2: Tried to say I had connected a usb1.1 header to the usb2.o pins. Well that isnt the case as I used the header we came with the board its a solid plug and cant be connected incorrectly. I eventually persuaded them to send it to Epox, but couldnt wait 28 days so I bought a new epox board.

    Same problem :mad2: I swapped psus round on 2 of my machines and problem has gone.

    Annoyed at lack of rma, especially as I have seen similar reports of the little component blowing and Epox saying that the WOL must have been connected wrong or the game controller.

    Regards

    John.
  • Geeky1Geeky1 University of the Pacific (Stockton, CA, USA)
    edited February 2004
    The store you took it to f**ked you over. I've plugged USB 1.1 headers into USB 2.0 pins. It works just fine. The two standards are backwards compatible. I would try to return the new Epox, though. They have a reputation for having a good deal of these kinds of problems, from what I've heard. Also, just as I suspected, the root of the problem is the PS (at least that's what it sounds like).

    Personally, I'd get rid of the PS and get an Antec SL-350 or something, and get a NF7-S to replace the Epox. But at least it's fixed, so it's up to you.
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