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Hardware Hacking The hammer and tongs school of Overclocking. (NOT for the beginner and you assume all risks) |
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np gizmo I would also need some help with measuring the capacitors, since i have never done this before... What must I do? |
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I have a friend who said he will try to get me into the university he studies in, because he has all the equipment needed right there... I will do the measurements and, after that, replace what needs to be replaced... lol i sure hope it's that easy... i think i will need your help once more on something: as far as i know, there is a pin on the back of the CPU socket that indicates the CPU voltage... The only problem is, i don't know which one it is... can you please give me a helpfull link? I wouldn't want a fried CPU, so measuring the voltage pin should keep me on the right track..... |
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What are you trying to do that you need the pin? There are actually 4 pins that the CPU uses to tell the mobo what voltage it needs. |
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Well, what am I trying to do is measuring the voltage on the CPU socket without having a CPU in... At the last test, i have noticed that the NorthBridge, SouthBridge and some capacitors get warm, but the CPU remains cold as ice... I figured out that this is because the CPU doesn't get any voltage, but i didn't know how to measure this... |
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There are three large coils next to the cpu socket and the capacitors. You can measure the CPU voltage there, by putting your meter probe on the point where one of the wires goes through the PC board. You will probably want to contact the side that is closest to the CPU. That's a guess, because I don't own that board myself. |
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I'd like to repair my board but I only have a "Five-Piece Soldering Tool Set" I bought last month from RadioShack. My skills are not impressive. I'm wondering if there is someone in Phoenix who can do this for me. Also, considering how cheap boards are now for the Athlon XP, I wonder if I should do like my friend who also has this board and just buy a replacement. So, soon I will have 2 of these boards that still work fine but just show bad caps. I hate to throw away things that still work. Where do you think I should look to find someone with the needed skills?
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The guy at badcaps.com does board repairs, I believe. This is by no means an endorsement of him, however. I have no idea if he does good work or not. |
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I did it! I've replaced a bad capacitor on my mainboard (it was a little swollen so i suspected it) and now it works flawlessly... Thank you Gizmo !! ![]() |
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Well done Tavy!
__________________ "Though all men live in ignorance before mystery, they need not live in darkness... Justice is foundation and Mercy ETERNAL." DKE "All that we do is touched by Ocean Yet we remain on the shore of what we know." Richard Wilbur [img]/forum/attachments/random-nonsense/16515-sigs-dan_drag.jpg[/img] Subscribers! Ask Pitch about a Custom Sig Graphic |
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I'm exceedingly pleased that my little article was of use to you. ![]() ![]() |
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Honestly, i don't think i could've done it without you ![]() ![]() |
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Now it's my turn. http://img335.imageshack.us/img335/7...mnit1dc.th.jpg I'm a 3rd year electronics engineer, so I have access to all the equipment I need. However, I'm still thinking that I will buy a new board to use for the momment. Just looking into getting the parts now. Should I stop running the board now? Will I damage the rest of the board? I don't want to hurt my baby. ![]()
__________________ Alita Black Widow Coolermaster Case MSI i975X Power Up! 2.1 Rev. C0 300MHz FSB BIOS - 10/08/2007 Intel Core Duo E6300 2.1GHz - Zalman 9700 Geil PC2-6400 2GB[2x1024] (4 - 4 - 4 - 12) (1.8V) Power Color X1950 Pro 512 (Stock, for now) Auzentech x-fi prelude 7.1 Twin SpinPoint 250GB SATAII Tagan 480W (TG480-U01) Plextor PX-716AL Raptor K1 Pro Gaming Keyboard Deathadder with S&S Steelmat ViewSonic VX922 19" VideoLogic DigiTheatre 5.1 (1stEd) - DTS, Dolby Digital, Optical |
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Long and short; I wouldn't advise continuing to run your board 'till you fix the caps. It is rather unlikely that the board would continue running in anything resembling a stable fashion long enough for damage to be done, but why take the chance? |
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Yeah, Im using my mum's new machine that I built now. However, I've been running it like this for about 2 or 3 weeks now I think......checked a picture I took of my machine at the end of July, and it was like this. Hasen't got any worse I think. How would I know if the CPU was damaged?
__________________ Alita Black Widow Coolermaster Case MSI i975X Power Up! 2.1 Rev. C0 300MHz FSB BIOS - 10/08/2007 Intel Core Duo E6300 2.1GHz - Zalman 9700 Geil PC2-6400 2GB[2x1024] (4 - 4 - 4 - 12) (1.8V) Power Color X1950 Pro 512 (Stock, for now) Auzentech x-fi prelude 7.1 Twin SpinPoint 250GB SATAII Tagan 480W (TG480-U01) Plextor PX-716AL Raptor K1 Pro Gaming Keyboard Deathadder with S&S Steelmat ViewSonic VX922 19" VideoLogic DigiTheatre 5.1 (1stEd) - DTS, Dolby Digital, Optical |
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Err..........when it stops working? Unfortunately, damage to electronics can range from subtle to devastating, depending on how severe it is. Damage to your CPU could be evidenced by something as simple as reduced stability in your system or an inability to hit the overclocks that you were used to seeing, or by something as obvious (and catastrophic) as letting all the blue smoke out. |
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__________________ Alita Black Widow Coolermaster Case MSI i975X Power Up! 2.1 Rev. C0 300MHz FSB BIOS - 10/08/2007 Intel Core Duo E6300 2.1GHz - Zalman 9700 Geil PC2-6400 2GB[2x1024] (4 - 4 - 4 - 12) (1.8V) Power Color X1950 Pro 512 (Stock, for now) Auzentech x-fi prelude 7.1 Twin SpinPoint 250GB SATAII Tagan 480W (TG480-U01) Plextor PX-716AL Raptor K1 Pro Gaming Keyboard Deathadder with S&S Steelmat ViewSonic VX922 19" VideoLogic DigiTheatre 5.1 (1stEd) - DTS, Dolby Digital, Optical |
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I got one 8RDA+ from my friend, it's rev. 1.1 and has many leaking caps.. the board progressively went unstable up to the point where it refused to boot at all.. I've came across this thread when googling around.. I just want to point out one thing - on my board, only capacitors from one manufacturer are leaking, while the others look just ok! in your guide you are suggesting to replace all of them, good or bad.. I think this is not necessary - only those low ESR caps comming from GSC are faulty, while the ones from TEAPO are ok as far as I can see.. I've also googled up this article talking about bad electrolyte material that appeared on Taiwan somewhere back in '02.. they say most every Taiwaneese cap manufacturer was affected, unlike TEAPO, which use Japaneese electrolyte instead.. that clearly corresponds with my observations.. I bet those GSC are from Taiwan ![]() ![]()
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Those boards that had the defective caps suffered from a high infant-mortality rate, and the failure was apparent pretty quickly. The failures we are seeing now have to do with the normal aging of components in almost all cases. That is why I recommend changing all of the caps mentioned in the article. However, the caps around the VCore regulator are going to be more likely to fail than elsewhere. Why? Heat! The area around the VCore regulator gets HOT! I didn't have a fan on my VCore reg for my mobo, and I was using water cooling, so I also didn't have the HSF sitting there to blow air across that part of the mobo either, and I was pushing the VCore HARD (2.2v). I took an IR thermometer reading one day and almost crapped my pants; the VCore FETs were pushing 100C! Now, if you didn't know to look for that, you wouldn't think too much about it, probably. But I can guarantee you that those caps wouldn't have put up with that for more than a few months. At the end of that time, I'd have had bulging caps, and I'd have been blaming the crap capacitors on my mobo, when in fact everything had been working not only at spec, but ABOVE SPEC. My point is that it is easy to say "Look! I've got those crap GSC caps in my mobo, and it died!". However, at this point in time it is far more likely that the caps actually reached the end of their design life for the conditions they were operating under than that you had bad caps to start with. Without a detailed failure analysis, you aren't going to be able to answer that question for sure. BTW, let me know how you make out with those Panasonic FM series caps. I suspect you'll find they are too large, but I gather there are at least two different layouts of that board, so you may not have problems. |
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Epox 8K7A+ motherboard capacitors Thanks for the great walkthrough. My motherboard started to act weird, everything would freeze up if I would work on 133Mhz of FSB frequency, and if I would decrease the frequency to say 110Mhz it worked for a week and then would do same thing. Only after it stopped working at 100Mhz I started looking on my motherboard and noticed that all power caps were "bloated" and also they were hot, which indicated that they dried up. So after finding this article and forum I decided to replace capacitors. I replaced capacitors on my EP-8K7A+ motherboard and everything works great for about a week already. I ordered capacitors from Digikey and for this motherboard I needed, 13pcs- 2200uF 10V 2pcs - 1500uF 6.3V 5pcs-1200uF 6.3V 6pcs-1000uF 6.3 V. Whole replacement including shipping was under 16$, and took total 1.5hrs of removing and installing capacitors. In comparison to how long it would take to find a compatible motherboard, and then reinstall windows and all the apps I am very glad I replaced the capacitors. If needed I can post exact numbers of the capacitors that I ordered from Digikey, however as long they fit the specs and can fit into your motherboard it doesn't really matter what company they are. ![]()
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