GA-965P-S3 won't post

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  • Half-Saint
    Badcaps Veteran
    • Jan 2010
    • 213
    • Slovenia
    #1

    GA-965P-S3 won't post

    The motherboard won't POST, most of the time it won't even start properly - the PSU fan spins up but the CPU fan doesn't. It looks like it gets a little bit of power then the power is shut off.

    Last week I was able to get it to boot a couple of times with the CPU fan not spinning at all.

    All of the caps look OK but I'm still suspicious. Most are Nichion HM, a few Evercons, G-Luxons and two Panasonic caps (3300uF 6.3V). All 1500uF 16V caps around the CPU socket are Nichion HM H0609.

    Bad caps or not?

    UPDATE: I had some spare time so I decided to replace all four 1500uF 16V Nichions with Samxon GC caps.

    After I push the power button, the CPU fan starts to spin after 3 seconds. Still no POST, no beeps. Any other suggestions?
    Last edited by Half-Saint; 06-04-2014, 09:27 AM.
    Tags: None
    • RJARRRPCGP
      Badcaps Legend
      • Jul 2004
      • 6304
      • USA
      #2
      Re: GA-965P-S3 won't post

      Originally posted by Half-Saint

      After I push the power button, the CPU fan starts to spin after 3 seconds. Still no POST, no beeps. Any other suggestions?
      More likely a bad socket pin, if 775!
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        Comment

        • c_hegge
          Badcaps Legend
          • Sep 2009
          • 5219
          • Australia
          #3
          Re: GA-965P-S3 won't post

          ^
          unlikely. It would be pretty obvious if that was the case. It's unlikely to be bad caps too. My money is on the chipset.
          I love putting bad caps and flat batteries in fire and watching them explode!!

          No wonder it doesn't work! You installed the jumper wires backwards

          Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

          Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

            Comment

            • Half-Saint
              Badcaps Veteran
              • Jan 2010
              • 213
              • Slovenia
              #4
              Re: GA-965P-S3 won't post

              Originally posted by c_hegge
              ^
              unlikely. It would be pretty obvious if that was the case. It's unlikely to be bad caps too. My money is on the chipset.
              Is there any way to confirm this? Would bad chipset cause a delay in the mobo powering up?

              UPDATE: just checked and the CPU pins are fine. Also tried it with another CPU and two other PSUs but no dice.
              Last edited by Half-Saint; 06-05-2014, 02:24 AM.

                Comment

                • crash-cyberdrive
                  Senior Member
                  • Jun 2013
                  • 62
                  • US
                  #5
                  Re: GA-965P-S3 won't post

                  Have you tried verifying the basics Memory, Video Card. Sound to me like a MosFet is failing or already failed. But the same could be as simple as a cracked joint.
                  A Picture of subject is always Welcome


                  Things saved from the e-landfill:
                  Vizio VA26LHDTV10T 26" - Bad EEPROM Cap
                  Asus PTGD1-LA Full Recap - Cha1 DDR socket damage
                  MSI PM8M3-V Unstable CPU Recap CPU VRM circuit
                  ViewSonic VA712B - still working on it
                  Kindle Fire USB Connector
                  MSI G31M-F Full Recap - Record Breaker done in 3Hrs.
                  MSI P67A-G43 BIOS chip Reprogram - Tested and Happy

                  The list will go on thanks to the people of this forum and many hours of reading.

                    Comment

                    • Half-Saint
                      Badcaps Veteran
                      • Jan 2010
                      • 213
                      • Slovenia
                      #6
                      Re: GA-965P-S3 won't post

                      I tried it with known good video cards, PCI as well as PCI-e and known good memory modules. To me the symptoms look the same as when the separate 12V connector isn't connected.

                        Comment

                        • stj
                          Great Sage 齊天大聖
                          • Dec 2009
                          • 31003
                          • Albion
                          #7
                          Re: GA-965P-S3 won't post

                          turn the pcb upside-down and power it up.
                          then meter the voltage across the caps around the cpu.

                            Comment

                            • Half-Saint
                              Badcaps Veteran
                              • Jan 2010
                              • 213
                              • Slovenia
                              #8
                              Re: GA-965P-S3 won't post

                              I got 12V on 1500uF 16V caps, 1.3V on all the rest including both 3300uF 6.3V.

                                Comment

                                • stj
                                  Great Sage 齊天大聖
                                  • Dec 2009
                                  • 31003
                                  • Albion
                                  #9
                                  Re: GA-965P-S3 won't post

                                  then it sounds like you have the cpu voltage.
                                  check the voltage on any regulator near the ram

                                    Comment

                                    • Th3_uN1Qu3
                                      Believe in
                                      • Jul 2010
                                      • 6031
                                      • Romania
                                      #10
                                      Re: GA-965P-S3 won't post

                                      I've fixed a few of those boards and it's either been the chipset/RAM regulator or the BIOS. Meter caps near the RAM slots and see if you get 1.8v on them. If you do, try flashing the BIOS.
                                      Originally posted by PeteS in CA
                                      Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                                      A working TV? How boring!

                                        Comment

                                        • Half-Saint
                                          Badcaps Veteran
                                          • Jan 2010
                                          • 213
                                          • Slovenia
                                          #11
                                          Re: GA-965P-S3 won't post

                                          I get 1.8V on two out of three. Only get 0.9V on the last one. Is that normal?

                                          Upon closer inspection, some elements left of the RAM slots appear to be covered in something sticky. Among them there are two K3918 transistors as well as 40T036H.

                                          EDIT #2: BIOS is not socketed so I'd have to desolder it and put it back after flashing. Maybe someone has done it with UNIFLASH without removing the chip?
                                          Last edited by Half-Saint; 06-13-2014, 07:22 AM.

                                            Comment

                                            • stj
                                              Great Sage 齊天大聖
                                              • Dec 2009
                                              • 31003
                                              • Albion
                                              #12
                                              Re: GA-965P-S3 won't post

                                              and how would you run uniflash?

                                                Comment

                                                • Half-Saint
                                                  Badcaps Veteran
                                                  • Jan 2010
                                                  • 213
                                                  • Slovenia
                                                  #13
                                                  Re: GA-965P-S3 won't post

                                                  I've read about people flashing the bios from floppy with a PC that wouldn't POST.

                                                    Comment

                                                    • stj
                                                      Great Sage 齊天大聖
                                                      • Dec 2009
                                                      • 31003
                                                      • Albion
                                                      #14
                                                      Re: GA-965P-S3 won't post

                                                      that's using a recovery flasher in the bootblock of the bios usually.
                                                      most older boards dont have that.

                                                        Comment

                                                        • Half-Saint
                                                          Badcaps Veteran
                                                          • Jan 2010
                                                          • 213
                                                          • Slovenia
                                                          #15
                                                          Re: GA-965P-S3 won't post

                                                          I'm seriously considering giving up on this board... spent too much time on it already. I don't have a suitable adapter for my Willem programmer so even if I managed to desolder the BIOS chip I wouldn't be able to program it.
                                                          Last edited by Half-Saint; 06-26-2014, 04:00 AM.

                                                            Comment

                                                            • Th3_uN1Qu3
                                                              Believe in
                                                              • Jul 2010
                                                              • 6031
                                                              • Romania
                                                              #16
                                                              Re: GA-965P-S3 won't post

                                                              Doesn't that board have a SPI flash? You can program it with a few resistors off the parallel port...
                                                              Originally posted by PeteS in CA
                                                              Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                                                              A working TV? How boring!

                                                                Comment

                                                                • Half-Saint
                                                                  Badcaps Veteran
                                                                  • Jan 2010
                                                                  • 213
                                                                  • Slovenia
                                                                  #17
                                                                  Re: GA-965P-S3 won't post

                                                                  I replaced one of the Samxon GC caps with a Panasonic FC 1500uF 16V and the board gets past POST now. I wonder, if Samxon GC caps are not a suitable replacement. I see that in some cases, Rubycon MBZ caps were used on this model and they seem identical to Nichion HM. Since MBZ caps are no longer made, would ZLJ be a suitable replacement?

                                                                    Comment

                                                                    • Half-Saint
                                                                      Badcaps Veteran
                                                                      • Jan 2010
                                                                      • 213
                                                                      • Slovenia
                                                                      #18
                                                                      Re: GA-965P-S3 won't post

                                                                      Looks like one successful poly mod! Thanks to c_hegge for helping out.

                                                                      There's just one last piece of the puzzle. When you power it on, it doesn't start immediately. There's a faint click from the PSU then another one a second or two later and that's when it starts. The board goes past POST fine. I have yet to install Windows to see how everything runs.
                                                                      Attached Files
                                                                      Last edited by Half-Saint; 12-04-2014, 04:11 AM.

                                                                        Comment

                                                                        • c_hegge
                                                                          Badcaps Legend
                                                                          • Sep 2009
                                                                          • 5219
                                                                          • Australia
                                                                          #19
                                                                          Re: GA-965P-S3 won't post

                                                                          That's interesting I would never have thought it to be the caps. Samxon GC should have worked fine there. What brand/model of PSU are you using? I remember that my GA-EP45-DS3L would often do something a bit like that. When the power button was pressed, it would power on for half a second then off again. Then it would start properly a second or two later. If your PSU has a relay to bypass the NTC thermistor when it powers up, then the clicking as it powers on or off is quite normal.
                                                                          I love putting bad caps and flat batteries in fire and watching them explode!!

                                                                          No wonder it doesn't work! You installed the jumper wires backwards

                                                                          Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

                                                                          Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

                                                                            Comment

                                                                            • mikail13
                                                                              Senior Member
                                                                              • Aug 2013
                                                                              • 93
                                                                              • Turkiye
                                                                              #20
                                                                              Re: GA-965P-S3 won't post

                                                                              and i have this board too. sent it to Gigabyte Turkey but they couldn't solve this problem. they changed CPU socket.

                                                                              after that i want to re-use solid caps around the CPU.

                                                                              all of them desolder and i see one is bad.

                                                                              and want to re-use mosfet near the rem slot that name's 40T03GH.
                                                                              i realise that they are under the voltages.

                                                                              must be 550 V but around 400 v.

                                                                              this is a good autopsy..
                                                                              Last edited by mikail13; 08-03-2015, 03:17 AM. Reason: mistake

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