Hi guys I recently got a biostar u8668-d motherboard from a friend. He said it was working and he left it for a little while and when he came back the computer was off when he turned it back on it would power on and not post. He just swapped out the board and gave me the old one. It had two blotted caps beside the cpu so I replaced them with the exact size as the old ones and still no post. so could I have more bad caps that aren't showing on top or bottom or could it be a fried board
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Re: biostar u8668-d
The other caps could be bad, they don't have to be bloated to be bad. And yes it could be something besides bad caps. -
Re: biostar u8668-d
thanks I was wondering if the caps could be bad and not showing. now for another question can I check the caps with a digital multimeter or do I need some other tools. I have never checked caps before only changed out the bloated ones. any advice would be appreciatedComment
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Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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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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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.
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Re: biostar u8668-d
When you ask about caps list: make, series, uF, volts, and diameter in mm.
.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.
-
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Re: biostar u8668-d
ok so I will need more tools. The caps are kzg 6.3v and 3300uf at least those were the ones the bloated the other caps are g-luxon 10v 1000uf there is also two kzg 16v 1500uf. The two I replaced I used ost 6.3v 3300uf that i had laying around left over from recaping another boardComment
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Re: biostar u8668-d
See, that's why asking old farts helps...
KZG are prone to failing without bloating, just replace all of them.
KZJ does the same thing. - Cases of bad series in an otherwise good brand.
G-luxon usually bloat but they are crap so just replace those too.
Unfortunately OST behave a lot like KZG.
Might get you going for now but for how long is questionable.
.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.
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Re: biostar u8668-d
thanks I will replace all the kzg and see if it boots. If it does then I will order all them in a good brand. any advice on a good brand capComment
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Re: biostar u8668-d
For KZG:
Rubycon MBZ, MCZ
Nichcon HM, HN [but not w/ 2001-2004 date codes]
Sanyo/Suncon WG
Panasonic FL, FJ
NIC Components NRSK, NRSJ [Don't confuse NRSK series with NRSK brand.]
Samxon GD, GC
.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
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Re: biostar u8668-d
thanks I just changed out the last kzg 6.3 3300uf as there were only two of them left and powered the board on and it posted fine so I will be ordering some new caps from the list you posted. thanks for all the helpComment
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Re: biostar u8668-d
With those that are Vcore caps you could also do a poly upgrade.
I don't think the cost would be much different anymore.
.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
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Re: biostar u8668-d
I might do that I am useing the board in a computer that I am building for my sister to do her school work on so it needs to last and if poly will last longer then I will go that way as I am sure she will be playing games on it like world of Warcraft.Comment
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I know I've been a little scarce lately (like the last 2-3 years), but I'm still here and still doing my thing with fixing PSUs.
For today's considerations, I have a Seasonic B12 BC-550 [A551bcafh] 550 Watt ATX power supply for you (click on links for full size images).
https://www.badcaps.net/filedata/fetch?id=3591771
https://www.badcaps.net/filedata/fetch?id=3591772
It's a modern ATX unit with fixed (non-modular) cables and an 80-plus bronze certificate. Here's the label:
https://www.badcaps.net/filedata/fetch?id=359177... -
Hello,
First, I am a complete noob with high voltage stuff. I'm learning, but I need help by someone looking over my shoulder.
I recently came into posession of a Heathkit IO-4205 5MHz Dual Trace Oscilloscope. The documentation is copyright 1978. I'm told it works.
I opened it up to check the caps before I applied power, and found the following black caps and wanted to know what they were. They are on the power supply board. I was able to read the name and model and came up with, "Nytronics 162J-1, 0.1uF, 20% tolerance, 2000VDC."
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Hello!
I have two projects on my work bench. One is a friends dead JBL Xtreme speaker with a blown voltage regulator and corresponding bulged and shorted cap. That cap has clear markings so I know what replacement I need for it.
The other project however is a whole different deal. It's a Zoom 9000 guitar effect from the 90th that has developed a devil hound howl when there is no input from the guitar. I'm guessing caps problem. So, since I don't really use this effect anymore I thought it would be a perfect project to learn on.
I have studied the board and... -
I'm trying to repair two old VCRs, they both have bad caps. One has leaky ones, the other would barely run until I subbed in some caps from another power supply I had laying around (though they are the wrong values). This vcr works for an hour or two, but then the power supply starts whining and the picture gets lines in it. I didn't replace all the secondary caps, so another voltage might still be problematic, or the values I used are too far off.
I've been on mouser and digikey but the options are a bit overwhelming. I just need some new ones that will work. They don't need to be top quality,... -
Good evening
I recently aquired a rev 1.1 Gigabyte 60XT, and was suprised of the amount of leaking caps for a motherboard of the P3 era. Especially the way the 330µf caps seems like the housing discolored even.
Now, there are some 3300µF 6.3V KZG series around the CPU. Would it be OK to replace them with something like EEUFR1A332 ? (Panasonic FR 3300µF 10V). Or was this board designed around very low ESR caps?
But I was also suprised about the bigger boys, which are 330µF 25V.
Could it be they used 25V caps because they were cheaper / available at that time?...
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