Asrock H87M-ITX power on and off, need advice please..

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • mrcliem
    Member
    • Mar 2020
    • 25
    • Indonesia
    #1

    Asrock H87M-ITX power on and off, need advice please..

    Hi members...

    I have Asrock H87M-Itx that sometimes ago dead due to bad bios, and thankfully one of good Badcaps member help me with the bios file.

    It have been working flawlessly for a few days, but suddenly this morning, the motherboard just wont turn on.

    If I pressed the power button, the power led comes on for one second and turn off. I check the psu_on pin while attach on motherboard, the voltage fluctuates, like it wont latch.. and I have swap 3 different good known PSU.

    So its like being switch on an off repeatedly...

    I have tried to swap and reseat everything, still no joy.. measured all caps and not found any short.

    Maybe anyone have experienced with the same problem with mine, and have any solution, would you please advise regarding my problem ?

    Thank you
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13900
      • Canada
      #2
      Re: Asrock H87M-ITX power on and off, need advice please..

      Check the resistance to ground on each coil.

      Your power supplies are beefy enough to support this logic board and hardware ? Be sure the power supplies are good quality and 700W or higher is recommended.

        Comment

        • mrcliem
          Member
          • Mar 2020
          • 25
          • Indonesia
          #3
          Re: Asrock H87M-ITX power on and off, need advice please..

          Checked all coil, nothing shorted to ground.

          Power supplies are good, pulled one from working pc .

          Thank you for your advice

            Comment

            • mon2
              Badcaps Legend
              • Dec 2019
              • 13900
              • Canada
              #4
              Re: Asrock H87M-ITX power on and off, need advice please..

              hi. Are any of the coil resistance readings to ground very low? You may have a case where a faulty cap is not dead short to ground but is low enough to force that leg of the power rail to shut off.

              The power switch is a real external switch? You can try to just go to the motherboard contacts for this switch and short there to confirm that the power switch is not defective.

              Do remove all memory; video card; any add-on products and perform these tests. To rule out that the add-ons are not causing this issue.

                Comment

                • mrcliem
                  Member
                  • Mar 2020
                  • 25
                  • Indonesia
                  #5
                  Re: Asrock H87M-ITX power on and off, need advice please..

                  @mon2
                  sorry for late reply,
                  the coil resistance seems normal as I remember, but I will definitely recheck all the cap..

                  as the switch, no its not external switch, when powered on with shorting power pin, it will turn off an on by it self... including power led.... its just on and off

                  I will try again as soon as I have time, and will report back...
                  Thank you

                  @RadoLouson
                  Thank you... it will be big help for me...

                    Comment

                    Previous template Next

                    Related Topics

                    Collapse
                    • Tynan Dill
                      Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
                      by Tynan Dill
                      I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

                      Upon bringing it home and plugging it up, it showed a standby light.

                      I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

                      The screen seems to blackout and stay black, but with a flashlight I can see the display.

                      With my Playstation 4 connected via HDMI, and running a game I can hear sound.

                      Assuming...
                      ORIGINAL POWER SUPPLY BOARD
                      7 Photos
                      11-22-2024, 01:46 PM
                    • PantherDave
                      Microsoft Surface Pro (5th gen) model 1796 - no power
                      by PantherDave
                      Hi all!

                      I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅

                      I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
                      https://www.badcaps.net/forum/troubl...-hardware-devi...
                      05-29-2024, 02:01 PM
                    • GLISIT
                      Asus Probook P5440UF-XB74 power issue
                      by GLISIT
                      Hi all,

                      TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!


                      I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!

                      A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about...
                      01-16-2025, 02:29 PM
                    • MyBrainIsAStrainer
                      Asrock H87-Pro4 Rev. G/A 1.04: Power cycling on reset only
                      by MyBrainIsAStrainer
                      Hi!

                      I have a weird one for you. I have a H87-Pro4 from Asrock that power cycles. But only when you do a restart after it was already running!

                      Symptoms in detail:
                      1. I switch off the ATX PSU for ~15-20 seconds, then switch it back on again.
                      2. I press power button. The board boots without issues.
                      3. I can shut down the board any way I want (via OS* menu, or pushing the power button - either in the OS or the boot manager).
                      4. Push power button again, board boots fine.
                      5. This shutdown/powerup can be repeated multiple times without problems.
                      6. BUT: If I do a restart instead
                      ...
                      06-25-2023, 02:44 PM
                    • sam_sam_sam
                      Desoldering gun station modified to use a 18 volt @ 20 amp switching power supply
                      by sam_sam_sam
                      I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump

                      One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
                      03-31-2024, 02:12 PM
                    • Loading...
                    • No more items.
                    Working...