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Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

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    #1

    Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

    Got this Asus P4P800-VM recently.

    There is no standby power light on the board. There is also no 3.3V DC on the PCI slots.

    The transistor C5706 is shorted between B-C, C-E, and B-E. I'm used to seeing the shorted C5707 in Benq monitor boards.

    Here is a shot of the c5706 chip. It is sandwiched between the PCI slots and I'm not sure how difficult it is to desolder or even possible without destroying the surrounding chips. I thought about cutting off the legs (inner and outer) and just "stacking" a c5707 on top, but I can't fit my side cutters in between the PCI slots.

    Any ideas on how to remove this c5706 chip? I don't have a solder station, chisel tip, or liquid flux to remove the tab. If this is removable with proper tools and technique/skills, then I'll try to find someone else to remove it.
    Attached Files
    Last edited by retiredcaps; 10-14-2011, 07:35 PM.
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    #2
    Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

    Another mysteriously dead ASUS :-(

    Comment

      #3
      Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

      I think it should be do-able with a regular iron. Just preheat the area around the transistor with a hair dryer or heat gun to make it a little easier to desolder it (don't make it too hot, though - after all you want to be able to hold the board). It may also be helpful to remove that green LED so it's out of the way.

      Originally posted by shovenose
      Another mysteriously dead ASUS :-(
      Not really. It has a dead transistor and a OST RLP cap next to it. When you use such fantastic components, you ought to get fantastic results .
      Last edited by momaka; 10-14-2011, 08:31 PM.

      Comment

        #4
        Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

        Removing that transistor takes less than 30 seconds with hot air in one hand and an iron in the other. No parts will be bumped off and the PCI slots won't be damaged. It comes off in good shape so you can test and reattach as necessary.

        It can also be removed with two irons and two people. Unfortunately since neither of you will be any good at soldering and won't know how much heat needs to go where, it will be like two bulls in a china shop. The legs will be bent, pads ripped off, and nearby parts will be dislodged. Many of the nearby parts are too small to reattach without hot air. Very small parts like C135 next to the skyscraper are difficult even with good equipment.
        sig files are for morons

        Comment

          #5
          Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

          Originally posted by shovenose View Post
          Another mysteriously dead ASUS :-(
          It's no mystery at all. It's just got the ASDS (ASUS Sudden Death Syndrome)
          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

            #6
            Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

            looks like u31 on the left edge got wet.

            Comment

              #7
              Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

              Good find. I didn't notice it.
              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

                #8
                Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

                Originally posted by kc8adu View Post
                looks like u31 on the left edge got wet.
                I did notice that after I looked at my photo.

                The person who I got this from said it wouldn't power up one day and then it was put away for about 10 months (presumably somewhere inside their house) before I received it. The person didn't say anything about power spikes or spilling any liquids on it.
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                Comment

                  #9
                  Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

                  it was live when it got wet.

                  Comment

                    #10
                    Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

                    Originally posted by momaka View Post
                    It has a dead transistor and a OST RLP cap next to it.
                    I desoldered the OST RLP cap (1000uF 6.3V) next to the c5706 since that is I all I can do for now. It read 1013uF on my multimeter. I don't have an ESR meter so I don't know the value.
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                      #11
                      Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

                      would you like the board i have?
                      i think it just needs new bios chip.. can use the one in yours.
                      My Computer.
                      AMD APU A4-3300 2.5ghz 1mb cache
                      Motherboard GigaByte GA-A75M-S2V
                      Kingston HyperX Blue DDR3 8GB (2x4GB)

                      SB Audigy 2 ZS [B800] Sound Card
                      500GB WD Caviar® Blue™
                      1 Terabyte WD Caviar® Black™
                      2 Terabyte WD Caviar® Black™

                      Comment

                        #12
                        Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

                        Originally posted by Phaihn View Post
                        would you like the board i have?
                        i think it just needs new bios chip.. can use the one in yours.
                        I appreciate the offer, but the cost of shipping the board to me would probably be in the $10 to $15 range which makes the board economically not feasible considering I can buy a complete used 3Ghz P4, 1GB DRAM, hard drive, power supply for about $30.

                        However, I can ship you the bios in my board if you want. This assumes I can remove it without destroying it AND it is good (I don't know if it is or not). Shipping this small chip should be way cheaper than shipping the board.
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                          #13
                          Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

                          Originally posted by retiredcaps View Post
                          I appreciate the offer, but the cost of shipping the board to me would probably be in the $10 to $15 range which makes the board economically not feasible considering I can buy a complete used 3Ghz P4, 1GB DRAM, hard drive, power supply for about $30.

                          However, I can ship you the bios in my board if you want. This assumes I can remove it without destroying it AND it is good (I don't know if it is or not). Shipping this small chip should be way cheaper than shipping the board.
                          ok.. so your not going to try to replace that part after all?
                          My Computer.
                          AMD APU A4-3300 2.5ghz 1mb cache
                          Motherboard GigaByte GA-A75M-S2V
                          Kingston HyperX Blue DDR3 8GB (2x4GB)

                          SB Audigy 2 ZS [B800] Sound Card
                          500GB WD Caviar® Blue™
                          1 Terabyte WD Caviar® Black™
                          2 Terabyte WD Caviar® Black™

                          Comment

                            #14
                            Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

                            Originally posted by Phaihn View Post
                            ok.. so your not going to try to replace that part after all?
                            I have a whole pile of other projects in front of that board. Tell me the best way to remove that bios chip. I have no extractors other than a screwdriver.
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                              #15
                              Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

                              Originally posted by retiredcaps View Post
                              I have a whole pile of other projects in front of that board. Tell me the best way to remove that bios chip. I have no extractors other than a screwdriver.
                              theres a tool you can get or you can use a very small screw driver and pry both corners a bit at a time..

                              http://www.bioschip.com/remove_dip.html
                              My Computer.
                              AMD APU A4-3300 2.5ghz 1mb cache
                              Motherboard GigaByte GA-A75M-S2V
                              Kingston HyperX Blue DDR3 8GB (2x4GB)

                              SB Audigy 2 ZS [B800] Sound Card
                              500GB WD Caviar® Blue™
                              1 Terabyte WD Caviar® Black™
                              2 Terabyte WD Caviar® Black™

                              Comment

                                #16
                                Re: Asus P4P800-VM - NO post, no standby 5V, no 3.3V on PCI

                                Originally posted by Phaihn View Post
                                i think it just needs new bios chip.
                                Did you try a bios recovery as per

                                http://www.biosman.com/biosrecovery.html

                                Bios at

                                http://www.asus.com/Motherboards/Int...00VM/#download
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