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    #1

    Asus P58W-LA motherboard

    Hi all,


    Here is a HP PC m7000/2gb Ram/Ati video card/Pentium D processor socket 775
    This the Pc of a friend. Pc keeps turning off/on by itself for ever, he said.
    I just got it to have a look. First I cleaned it up. Such dust I have never seen, only from other's pictures. Five years since purchased and never been cleaned.
    I checked:
    -video card (replaced with one I have) OK
    -Removed all other cards - the same problem
    - removed all Ram memory- a good working motrherboard should have some beeps, this one nothing.
    - Attached my AX750 PSU - the same problem
    - cleared CMOS , no help
    - changed the Hdd, the same problem
    The only thing I have not checked is the processor, I have not any to replace it.
    This motherboard has a few aluminium capacitors, the others are KZG, I think are from 2005, no sure. I did not remove the mainboard to look closer.
    The three capacitors beside CPU, are KZG. No sign of leakage. They look perfect.
    I think one of the two are the problem; the motherboard or processor. I tend to believe, based on my previous experience with KZG caps, that is motherboard issue.

    What could it be? The KZG capacitors?

    Thanks
    Last edited by emy12; 01-25-2012, 06:57 AM.
    PC Cooler Master Centurion CAC-T01-EK/Q9550s/GA-EP45-DS4/GEIL Black Dragon 4GB/MSI 7790 OC/ 2.5 500 7200HDD/AX760W/Win 10 Pro
    Tags: None
    #2
    Re: Asus P58W-LA motherboard

    Originally posted by emy12 View Post
    Pc keeps turning off/on by itself for ever, he said.
    I have this exact same motherboard. Mine isn't working with no post, but that is another story.

    I wonder if your reset pin is stuck or shorted? This would be pin in the same place where the power on/off pins are.
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    Comment

      #3
      Re: Asus P58W-LA motherboard

      KZG are a well known problem. They fail often and don't always bloat.

      Pretty good chance that's the only problem. [Or at least the biggest.]

      You should replace those before you spend a bunch of time on this.
      They are probably at least part of the problem and if they are they will hide any other problems.
      .
      Mann-Made Global Warming.
      - We should be more concerned about the Intellectual Climate.
      -
      Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
      - Dr Seuss
      -
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      -

      Comment

        #4
        Re: Asus P58W-LA motherboard

        I don't think I've ever seen the 8mm KZGs bloat, but I often see the 10mm KZGs bloated (Especially the 3300uF ones)... 8mm KZGs should be replaced on sight.
        "We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."

        -Leonid Brezhnev (On the Yom Kippur War)

        Comment

          #5
          Re: Asus P58W-LA motherboard

          Originally posted by mockingbird View Post
          I don't think I've ever seen the 8mm KZGs bloat,
          I have. - In Vcore.
          More often they die without bloating though.
          .
          Mann-Made Global Warming.
          - We should be more concerned about the Intellectual Climate.
          -
          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
          - Dr Seuss
          -
          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
          -

          Comment

            #6
            Re: Asus P58W-LA motherboard

            Back with the old problem.
            My friend decided to go ahead to fix his PC, his laptop was down too for a week and wants to have the PC done too.
            Before replacing the motherboard I changed the 5x KZG 1000 uF 16v with nichicon 1000uF 16v, but it does the same, when turn the pc, all fans start and after a few seconds it turns off.
            The motherboard looks OK, no signs of burnโ€ฆ I am thinking what else could be, maybe the chipset Intel P965 burnt? I do not know.
            The other capacitors on motherboard are:
            6x polymer 820uF 2.5v
            4x CFJ 1500uF 6.3v
            5x Polymer 471uF 6.3v
            11x KZG 820uF 6.3v
            1x CFJ 470uF 16v
            and a few KZG smaller...

            I am thinking to replace the 6x polymer 820uf 2.5 are closed on the left side of processor.
            This PC never been cleaned and run till failed, I think were high temps, there are some traces of burn underneath of the motherboardโ€ฆ. (the shape of the heat sink mounting metal plate at the back of motherboard)
            What do you guys think, to go ahead to change some more capacitors or throw it away.
            Thanks
            Attached Files
            PC Cooler Master Centurion CAC-T01-EK/Q9550s/GA-EP45-DS4/GEIL Black Dragon 4GB/MSI 7790 OC/ 2.5 500 7200HDD/AX760W/Win 10 Pro

            Comment

              #7
              Re: Asus P58W-LA motherboard

              the ones that are on the VERY left side of the CPU were replaced? They look like nichis in the picture, is this a picture of post replacement or pre replacement? Which nichicons did you replace them with?

              also, I notice a nichicon next to the northbridge, This is a 775 board probably from 04-05 within the bad nichicon manufacturing time range
              Last edited by Uranium-235; 06-01-2013, 06:54 AM.
              Cap Datasheet Depot: http://www.paullinebarger.net/DS/
              ^If you have datasheets not listed PM me

              Comment

                #8
                Re: Asus P58W-LA motherboard

                Thank you for replay.
                Yes, it is post replacement. I replaced the KZG 16v 1000uF 8mm with Nichicon HN 16v 1000uF 10X16mm, five of them on left side of the CPU.
                The Nichicon HN(M) 16v 1000uF 10X16mm I bought them a year ago.
                PC Cooler Master Centurion CAC-T01-EK/Q9550s/GA-EP45-DS4/GEIL Black Dragon 4GB/MSI 7790 OC/ 2.5 500 7200HDD/AX760W/Win 10 Pro

                Comment

                  #9
                  Re: Asus P58W-LA motherboard

                  Originally posted by emy12 View Post
                  Thank you for replay.
                  Yes, it is post replacement. I replaced the KZG 16v 1000uF 8mm with Nichicon HN 16v 1000uF 10X16mm, five of them on left side of the CPU.
                  The Nichicon HN(M) 16v 1000uF 10X16mm I bought them a year ago.
                  what about this one? it looks like an original board nichicon. Remember any 01-05 HP and dell boards have a chance of bad nichicons

                  edit: nevermind, looking at the other picture I can see its a panasonic. But the 3 below are KGZ's and I think part of the northbridge VRM, you might want to consider replacing those
                  Attached Files
                  Last edited by Uranium-235; 06-01-2013, 08:40 AM.
                  Cap Datasheet Depot: http://www.paullinebarger.net/DS/
                  ^If you have datasheets not listed PM me

                  Comment

                    #10
                    Re: Asus P58W-LA motherboard

                    Originally posted by Uranium-235 View Post
                    , you might want to consider replacing those
                    I do not know which once you are talking about. Maybe some of the 11x KZG 820uF 6.3v
                    I have lots of Nichicon HM 1000uF 6.3v, can I use them to replace some of the KZG 820uF 6.3v?

                    ....Those three you are talking about?:
                    1x 16v 100uF KMG
                    2x 16V 220uF Radial KMG

                    KMG = United Chemi-Con ?
                    I noticed that in spite of the same colour which is the same as KZG, there are smaller once as KMG...
                    Attached Files
                    Last edited by emy12; 06-01-2013, 03:49 PM.
                    PC Cooler Master Centurion CAC-T01-EK/Q9550s/GA-EP45-DS4/GEIL Black Dragon 4GB/MSI 7790 OC/ 2.5 500 7200HDD/AX760W/Win 10 Pro

                    Comment

                      #11
                      Re: Asus P58W-LA motherboard

                      Such dust I have never seen, only from other's pictures. Five years since purchased and never been cleaned.
                      I was just thinking, can this just be a problem related with the processor getting too hot, and a security shutting the computer down ? or a warped board ?

                      Can you just remove the heatsink and renew thermal paste ?

                      Comment

                        #12
                        Re: Asus P58W-LA motherboard

                        Originally posted by bibilit View Post
                        I was just thinking, can this just be a problem related with the processor getting too hot, and a security shutting the computer down ? or a warped board ?

                        Can you just remove the heatsink and renew thermal paste ?


                        As I said, everything else is OK, hardware point of you.
                        I am saying this because now I replaced it with FOXCONN 45CMX, a fellow had a few of them new, sealed, never used.
                        I got it, installed Windows 7, and everything is fine now.

                        So the motherboard is the problem. I am still trying to fix it, to change a few more capacitors, if is not going to work, I will remove the capacitors I have replaced and throw it away.

                        FOXCONN 45CMX is not that strong built as the Asus P58W-LA, but as long as is working finem it is alright.
                        PC Cooler Master Centurion CAC-T01-EK/Q9550s/GA-EP45-DS4/GEIL Black Dragon 4GB/MSI 7790 OC/ 2.5 500 7200HDD/AX760W/Win 10 Pro

                        Comment

                          #13
                          Re: Asus P58W-LA motherboard

                          Have you tried to place a new 3V CR2032 BIOS-battery? I don't see that step in your startpost.
                          In my experience those battery's last 4-6 years. If the voltage is below 3.00 volts it's as good as empty (according to various Lithium CR2032 datasheet's).
                          Especially Asus-board's can show such strange behavior with an almost empty battery, sometimes the board looks just plain 'dead'. Or the normal/usual bios-settings-reset behavior as it is with other manufacturers.
                          Last edited by Clutchbox; 07-10-2013, 06:39 PM.

                          Comment

                            #14
                            Re: Asus P58W-LA motherboard

                            The Motherboard รจ P5BW-LA.
                            I get the same Motherboard with same problem, i found this capcitore is about to ploat. it's PCE15 value 820uf/6.3V
                            after eplace it, take a part the the heat sink, then will clean it & CPU, change the termal conductor. the Pc will Work fine.
                            Attached Files

                            Comment

                              #15
                              Re: Asus P58W-LA motherboard

                              Can anyone tell me what cap is in the first position (CE134) between the PCIEX16 and
                              PCI1 slot, mine is missing and I would like to replace it(same board P5BW-LA)

                              Comment

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