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Thread: GA-MA785GMY-UD2H No Power




  1. #1
    Join Date
    Jan 2010
    Location
    Canada
    Posts
    2

    Default GA-MA785GMY-UD2H No Power

    First and foremost, thank you so very much for making this support available. Much thanks goes to the TweakTown community.



    System Specs:

    AMD Athlon X4 630 2,8GHZ True Quad Core Processor with 2.0mb Cache
    Gigabyte GA-MA785GMT-UDH2H (Rev 1.0, Bios N/A)
    OCZ DDR3 PC3-10666 Gold Edition 2x 2GB 1333MHz
    Western Digital Caviar Green 1.0 TB Sata HDD (WD10EADS)
    Thermaltake TR2 RX 650W PS (TRX-650M)
    Thermaltake Armor Case (VA8000BWS)
    LG GH22LS30 Super Multi - DVD±RW (±R DL) / DVD-RAM drive - Serial ATA

    ~ Bios N/A as I cannot even access start-up screen to determine.



    Problem Description:

    With that in mind, I recently encountered a power issue upon setting up a new system. For some reason the motherboard will not show signs of receiving power (nor does the rest of the system, hdd - chasis fans - dvd drive - etc). The motherboard's LED does not even light up.

    I quickly tested the PS using Thermaltake's Dr. Power, upon which power to the chasis - dvd - hdd - etc resumed, obviously with the motherboard disconnected, there were no signs of activity on the mobo.

    All components were recently purchased brand new. I have since tested, the memory, the hdd, dvd drive, the power supply, as well as the case, with another setup and all appear to function fine.

    The only thing I can think of is that the case was lacking a hole for a standoff to line up with ONE of the motherboard's metalized holes. Right next to the Sys_Fan.

    The Sys_Fan and NB_Fan have no fans plugged in - would these be necessary? I had previously plugged in chasis fans to a designated Chasis_Fan plug on an old m/b.. None fit the Sys_Fan so I didnt try, and none would constitute a North Bridge fan, so again left unused.

    Any help would be greatly appreciated. Thank you in advance for your time.
    Last edited by capnjav; 01-05-2010 at 03:20 AM.

  2. #2
    Join Date
    Apr 2009
    Location
    Virginia
    Posts
    1,470

    Default Re: GA-MA785GMY-UD2H No Power

    You may be getting a short from the case Or the case may be in the way for you to see all the inserion pins. Sometimes that 24 pin connection is misaligned with the pins. Sometimes it, WELL it can be many things causing a short. When you have a no P.O.S.T. You will want to remove the motherboard from the case and perform a P.O.S.T. bench test to it.
    Instructions as follows.
    Please follow the following simple steps.
    1. Remove the motherboard from the case and any trays or chassies.
    2. Place the motherboard on top of the cardboard box (you can use the motherboard box)
    3. Install a good CPU, CPU fan, good Memory, a good Power supply plugs (plug the 1 X 20 pin or 1 X 24pin and 1 X 4 or 2 X 8 pin from the power supply unit) and a good working video card.
    4. Hook the monitor to the video card and be sure the monitor is switched on.
    5. Install the front panel wires as your motherboard manual suggest negative side as white wires. Turn on the system board by using the case "Power on" switch.
    6. If the system fails to POST, check the components' insertion again to ensure they are all connected properly. If still no P.O.S.T.
    Then RMA. This may save you some time and S&H charges if it is a short from the case. This is a known fix and happens at times.
    You will also want to remove the heatsink and fan and cpu clean all the old thermal paste or compound off and double-check the pins. Then carefully reinstall to be sure it is seated well. This is best if performed outside of the case also. Then remove the memory and try installing it in the white slots. Then the blue slots. see if it works in 1&2 or 3&4 Sometimes this is the issue.
    Here is a PDF file of your motherboard manual. It will take time to download it.---->http://download.gigabyte.ru/manual/m...-ud(s)2h_e.pdf
    Last edited by artdrivers; 01-05-2010 at 04:41 AM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


  3. #3
    Join Date
    Jan 2010
    Location
    Canada
    Posts
    2

    Default Re: GA-MA785GMY-UD2H No Power

    Thank you for your prompt reply..

    Prior to removing all components again I decided to give it one last attempt (removed all chasis f/p pins and reconnected them, removed ram and reinserted it unplugged sata cables and reinserted, unplugged chasis usb and reconnected, unplugged chasis i394 and reconnected)...... AND the system appears to be functioning......

    I say appears as my monitor was receiving no video signal from the onboard video on the m/b - and so i cannot verify full functionality, but no POST.. It should be noted I tried both dvi and vga to no avail.

    With that in mind, I removed the system from the chasis anyway, as I was still unsure if this was a potential source of the problem. Again no video, yet appears to be running fine.

    What should I attempt now, as this may not require RMA.

    Thanks again, greatly appreciated.

  4. #4
    Join Date
    Apr 2009
    Location
    Virginia
    Posts
    1,470

    Default Re: GA-MA785GMY-UD2H No Power

    No P.O.S.T. out of case could be the cpu, memory, graphics (which is onboard), power, and motherboard. You must have it diagnosed or diagnose it yourself which may require for you to swap parts if you have extra parts. If not take it to a computer repair shop and find out what they determine is bad and R&R and RMA that or those parts.
    Last edited by artdrivers; 01-06-2010 at 08:03 AM.
    http://forums.tweaktown.com/gigabyte...ench-test.html
    http://www.gigabyte-usa.com/FileList...ios_qflash.pdf
    Phenom II 945 @ 3.2Ghz w/Thermaltake Big Typhoon Pro 14 CPU Cooler
    Gigabyte GA-MA78GM-S2H rev.1.1 F11
    Sapphire 3870HD / 100225L / 512MB / ddr4
    4GB / Kingston / KHX8500D2K2/2GN / 5-5-5-18 / 1066Mhz
    (2) WD Caviar / WD2500AAKS/ 250GB in SATA RAID-0
    (1) WD Caviar / WD2500AAKS/ 250GB in SATA AHCI
    (2) IDE's 1 8XdualDVDRW 1 52x32x52x CDRW
    Antec /Neo HE550 / 550W
    Mid size ATX case with show through panel
    2) 80x80 front fans (1) 120x120 rear fan and small nb fan
    Microsoft comfort curve USB keyboard 2000 ver.1.0
    Logitech G500 USB mouse
    Monitor: CMV937A
    7.1+2 Channel High Definition ALC889A
    Dual boot Windows 7 32bit home & Windows 7 64bit home


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