Results 1 to 3 of 3

Thread: Shutdown Problem

  1. #1
    Newbie
    Join Date
    Jun 2004
    Location
    Colorado
    Posts
    14

    Shutdown Problem

    This is the deal. I am running a 250watt Dc-Dc psu, generic, not an opus. The problems started when the shutdown controller was mounted on a bracket on the side of the psu, and the way everything was installed, it was hanging upside down. After I upgraded to the new PSU and miniITX motherboard, the mosfet on the shutdown controller i purchased from here (ITPS) got so hot it melted the solder from the mosfet's ground, and it hung just enough to fail startup proceedures. I resoldered it, even though the pcd had been burnt a bit, and turned it right-side-up, it worked for a day max then just quit working alltogether.

    After this, I eliminated the ITPS from the power loop and ran power directly into the psu from the battery. This also worked for a while, using my previous manual overide switch as the new power on switch, but after trying to add my cd-rw drive in the front, and failing, that method has failed as well.

    The computer will turn on and off fine, however when the computer turns off, the powersupply will stay on, and the PS-ON continues to recieve +5v from the psu. This is very wierd, and I have never seen this happen before. After I realized what was happening, I clipped the PS-ON signal, and I now control when it gets 5v from the same switch in the front of the vehicle, however I do not like this solution, as it is a 2 step process, I must first give the PSU power, then go around in the trunk and short the motherboard on signal to get the computer to boot up.

    Has anyone else had this problem before? In a nutshell, the computer will turn off, but not the PSU, I tried a reg. 120v power supply and it does the same. The motherboard is brand new and nothing its shorted on the board that meets the eye. Could it be in BIOS? Thanks.

    Kyle

  2. #2
    FLAC
    Join Date
    Apr 2001
    Location
    Portland OR
    Posts
    1,244
    If you decide you want a new shutdown that won't melt, the uSDC20D will be perfect for your application..

    -Jeff
    MPEGBOX - Plexiglass Computer
    www.mpegbox.com

  3. #3
    MySQL Error MatrixPC's Avatar
    Join Date
    Sep 2003
    Location
    Beach City, Socal
    Posts
    4,053
    Per ATX standard, the PC will be on but the PSU is still in Standby mode and so the mobo. The only sure way that the PSU is 100% off is cut off power to the PSU.
    2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
    89 Supra Turbo P3 600E@750/Abit BE6 II, Alpine M-BUS Car2PC.
    Y2K Accord Dell GX150
    RoadRunner is the best FE PERIOD
    EmoRebellion is a SCAMMER

Similar Threads

  1. Lilliput TouchKit problem solved!
    By AAVfReaK in forum LCD/Display
    Replies: 4
    Last Post: 11-07-2010, 09:29 AM
  2. prob with mucha shutdown controller
    By geebee in forum Power Supplies
    Replies: 7
    Last Post: 12-08-2004, 10:30 AM
  3. Lilliput Powering On/Off problem
    By masch in forum LCD/Display
    Replies: 0
    Last Post: 05-09-2004, 12:55 PM
  4. power on problem ??? help please anyone
    By Pingo1969 in forum Power Supplies
    Replies: 26
    Last Post: 04-07-2004, 08:47 AM
  5. Arise MPD-810H shutdown problem fixed
    By jpainter99 in forum Power Supplies
    Replies: 0
    Last Post: 07-26-2003, 08:03 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •