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#1
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Think I just threw out $75 worth of RAM for no reason...
OhioGuy wrote:
I've got a system that has been running unstable lately. It was based on a roughly 7 year old ECS K7VZA board, with Duron 1.3 CPU. I used the ultimate Boot CD to run some tests. Memory kept failing. I ran several other memory tests. That failed too. I snapped the 512 MB PC133 stick in half and threw it away. I then ran the same test on some other old 256 MB stick of PC100 I had laying around. That failed 3 different stability tests, so I snapped it in half and threw that away, too. So, then I put a third PC100 256MB stick in there, and it failed, too. I started thinking, WAIT A MINUTE... not too likely. So, I ran tests on the CPU, on the motherboard. Motherboard failed a few of the tests here and there, so I took it out to look it over. Guess what? Half of the large capacitors were bulging, and two had actually burst open. It was a wonder the thing even booted up properly as often as it did. Now I'm thinking I probably threw out two perfectly good sticks of RAM, just because the tests were giving me errors when testing them. I wish I had thought to look over the motherboard better first. Does anybody make motherboards that use a different type of capacitor other than the common electrolytic ones that tend to bulge and kill a board? I've had this happen to 3 of my motherboards now, and I think those cheap capacitors are the only thing that has actually gone bad. I'm sick of losing perfectly good boards because of electrolytic capacitors going bad. Actually it's not the cheap capacitors but the cheap power supplies or power supplies going bad. People come along and use a DVM and say everythings cool it reads +5 volts or whatever. Put a scope on it and you have 200mv of trash. |
#2
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Think I just threw out $75 worth of RAM for no reason...
I've got a system that has been running unstable lately. It was based on a
roughly 7 year old ECS K7VZA board, with Duron 1.3 CPU. I used the ultimate Boot CD to run some tests. Memory kept failing. I ran several other memory tests. That failed too. I snapped the 512 MB PC133 stick in half and threw it away. I then ran the same test on some other old 256 MB stick of PC100 I had laying around. That failed 3 different stability tests, so I snapped it in half and threw that away, too. So, then I put a third PC100 256MB stick in there, and it failed, too. I started thinking, WAIT A MINUTE... not too likely. So, I ran tests on the CPU, on the motherboard. Motherboard failed a few of the tests here and there, so I took it out to look it over. Guess what? Half of the large capacitors were bulging, and two had actually burst open. It was a wonder the thing even booted up properly as often as it did. Now I'm thinking I probably threw out two perfectly good sticks of RAM, just because the tests were giving me errors when testing them. I wish I had thought to look over the motherboard better first. Does anybody make motherboards that use a different type of capacitor other than the common electrolytic ones that tend to bulge and kill a board? I've had this happen to 3 of my motherboards now, and I think those cheap capacitors are the only thing that has actually gone bad. I'm sick of losing perfectly good boards because of electrolytic capacitors going bad. |
#3
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Think I just threw out $75 worth of RAM for no reason...
"OhioGuy" wrote in message ... I've got a system that has been running unstable lately. It was based on a roughly 7 year old ECS K7VZA board, with Duron 1.3 CPU. I used the ultimate Boot CD to run some tests. Memory kept failing. I ran several other memory tests. That failed too. I snapped the 512 MB PC133 stick in half and threw it away. I then ran the same test on some other old 256 MB stick of PC100 I had laying around. That failed 3 different stability tests, so I snapped it in half and threw that away, too. So, then I put a third PC100 256MB stick in there, and it failed, too. I started thinking, WAIT A MINUTE... not too likely. So, I ran tests on the CPU, on the motherboard. Motherboard failed a few of the tests here and there, so I took it out to look it over. Guess what? Half of the large capacitors were bulging, and two had actually burst open. It was a wonder the thing even booted up properly as often as it did. Now I'm thinking I probably threw out two perfectly good sticks of RAM, just because the tests were giving me errors when testing them. I wish I had thought to look over the motherboard better first. Does anybody make motherboards that use a different type of capacitor other than the common electrolytic ones that tend to bulge and kill a board? I've had this happen to 3 of my motherboards now, and I think those cheap capacitors are the only thing that has actually gone bad. I'm sick of losing perfectly good boards because of electrolytic capacitors going bad. Now there's a perfect example of what I have been saying for a Lonnnnngggggg time. You cannot test anything that remains in the suspect machine. Your results are tainted, and rightly so, you're using a machine that is ALREADY known to have a problem. Allot of people get bad advice when it comes to running software based memory testers. BAD CAPS ....Been seeing more now than when the issue began and the panic was in full force,,, something ain't right. |
#4
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Think I just threw out $75 worth of RAM for no reason...
Some of the certain green GSC type caps from Taiwan are dodgy, the
Japanese type's are ok and not affected here, apparently due to some industrial espionage...! See-: http://www.niccomp.com/taiwanlowesr.htm More interesting reading -: http://www.pcmag.com/article2/0,4149,939887,00.asp http://home.earthlink.net/~doniteli/index27.htm May not be the case with your mobo, thought it might be worth reading, all from my post in 'News n Stuff' 'Bad Taiwan caps in mobos'. Caps are used to decouple the supply lines reducing the HF ripple caused by the clocking pulses and the switch mode power supply unit, as the internal resistance rises the heat will build up and this is the start of it's demise, because it just can't handle the ripple current.... the reason why you should always use hi-temperature 105 deg. C low ESR types. Davy |
#5
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Think I just threw out $75 worth of RAM for no reason...
On Mon, 19 Mar 2007 21:32:15 -0500, "OhioGuy" wrote:
I've got a system that has been running unstable lately. It was based on a roughly 7 year old ECS K7VZA board, with Duron 1.3 CPU. I used the ultimate Boot CD to run some tests. Memory kept failing. I ran several other memory tests. That failed too. I snapped the 512 MB PC133 stick in half and threw it away. I then ran the same test on some other old 256 MB stick of PC100 I had laying around. That failed 3 different stability tests, so I snapped it in half and threw that away, too. So, then I put a third PC100 256MB stick in there, and it failed, too. I started thinking, WAIT A MINUTE... not too likely. So, I ran tests on the CPU, on the motherboard. Motherboard failed a few of the tests here and there, so I took it out to look it over. Guess what? Half of the large capacitors were bulging, and two had actually burst open. It was a wonder the thing even booted up properly as often as it did. Now I'm thinking I probably threw out two perfectly good sticks of RAM, just because the tests were giving me errors when testing them. I wish I had thought to look over the motherboard better first. Does anybody make motherboards that use a different type of capacitor other than the common electrolytic ones that tend to bulge and kill a board? I've had this happen to 3 of my motherboards now, and I think those cheap capacitors are the only thing that has actually gone bad. I'm sick of losing perfectly good boards because of electrolytic capacitors going bad. http://www.gigabyte.com.tw/FileList/NewTech/2006_motherboard_newtech/article_02_all_solid.htm |
#6
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Think I just threw out $75 worth of RAM for no reason...
"JAD" john doe harvesting.addys.for.porn.spam wrote:
"OhioGuy" none none.net wrote in message news:etndj4$8qu$1 aioe.org... I've got a system that has been running unstable lately. It was based on a roughly 7 year old ECS K7VZA board, with Duron 1.3 CPU. I used the ultimate Boot CD to run some tests. Memory kept failing. I ran several other memory tests. That failed too. I snapped the 512 MB PC133 stick in half and threw it away. I then ran the same test on some other old 256 MB stick of PC100 I had laying around. That failed 3 different stability tests, so I snapped it in half and threw that away, too. Now there's a perfect example of what I have been saying for a Lonnnnngggggg time. You cannot test anything that remains in the suspect machine. You can if you're looking for a positive result. Your results are tainted, and rightly so, you're using a machine that is ALREADY known to have a problem. The result is perfectly good if the test is good, since it suggests/proves the part you are testing is not the cause. Allot of people get bad advice when it comes to running software based memory testers. BAD CAPS ....Been seeing more now than when the issue began and the panic was in full force,,, something ain't right. Path: newssvr21.news.prodigy.net!newsdbm03.news.prodigy. net!newsdst01.news.prodigy.net!prodigy.com!newscon 04.news.prodigy.net!prodigy.net!news.linkpendium.c om!news.linkpendium.com!newspeer1.nwr.nac.net!bord er2.nntp.dca.giganews.com!nntp.giganews.com!novia! nx01.iad01.newshosting.com!newshosting.com!130.81. 64.211.MISMATCH!cycny01.gnilink.net!hwmnpeer01.lga !news.highwinds-media.com!hw-filter.lga!newsfe02.lga.POSTED!53ab2750!not-for-mail From: "JAD" john doe harvesting.addys.for.porn.spam Newsgroups: alt.comp.hardware.pc-homebuilt References: etndj4$8qu$1 aioe.org Subject: Think I just threw out $75 worth of RAM for no reason... Lines: 40 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-RFC2646: Format=Flowed; Response Message-ID: jIILh.647$gC7.36 newsfe02.lga X-Trace: nphhjmdkmllhpdkelhbgfpgcdpepfmkgkppchlggleanipjmln ijfcjfbjnkiolehajgjifcolfnimpfbpehjnlekolappcdgpco ipjkkiblhpfcmkbpifpenoicdiibenfnojecgjgcfcij NNTP-Posting-Date: Mon, 19 Mar 2007 20:39:59 MST Date: Mon, 19 Mar 2007 20:40:02 -0700 Xref: prodigy.net alt.comp.hardware.pc-homebuilt:487257 |
#7
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Think I just threw out $75 worth of RAM for no reason...
On Mar 19, 10:32 pm, "OhioGuy" wrote:
I've got a system that has been running unstable lately. It was based on a roughly 7 year old ECS K7VZA board, with Duron 1.3 CPU. I used the ultimate Boot CD to run some tests. Memory kept failing. I ran several other memory tests. That failed too. I snapped the 512 MB PC133 stick in half and threw it away. I then ran the same test on some other old 256 MB stick of PC100 I had laying around. That failed 3 different stability tests, so I snapped it in half and threw that away, too. So, then I put a third PC100 256MB stick in there, and it failed, too. I started thinking, WAIT A MINUTE... not too likely. So, I ran tests on the CPU, on the motherboard. Motherboard failed a few of the tests here and there, so I took it out to look it over. Guess what? Half of the large capacitors were bulging, and two had actually burst open. It was a wonder the thing even booted up properly as often as it did. Now I'm thinking I probably threw out two perfectly good sticks of RAM, just because the tests were giving me errors when testing them. I wish I had thought to look over the motherboard better first. Does anybody make motherboards that use a different type of capacitor other than the common electrolytic ones that tend to bulge and kill a board? I've had this happen to 3 of my motherboards now, and I think those cheap capacitors are the only thing that has actually gone bad. I'm sick of losing perfectly good boards because of electrolytic capacitors going bad. HA HA that's somthing i learned SAVE EVERYHTING!!! even if you think it is junk NEVER Compleatly kill anything |
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