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#1
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Bad Caps
I really don't know where to post this, because you will see it
applies to all mobos that use Taiwan caps, capacitors for short. I have a Gigabyte GA-7VAXP Rev. 1 mobo, I usually do an inspection and a 'dust down' at various intervals, this time I noticed one cap has a swollen top, these are the weak point of the casing for if there were no 'vent's the darn thing would explode like a firecraker, leaving silver foil all over the mobo which could cause short circuiting and complete damage, the gunge they leave behind is very corrosive and will 'rot' the copper tracks on the mobo in no time. Should I leave it or change it, well, I decided to change it - just to be on the safe side and to save possibility of further damage, you do really need good soldering practice and a little knowledge to do this operation, the mobo was working fine but this time I felt "if it ain't broke I had to fix it" or damage could easily have resulted at any time. The are two identical caps near the yellow socket, only one was affected, they are green and are 1200uF 6.3 Vdc, whatever you do computers must use capacitors with low ESR and 105 deg C temperature rating or greater, standard components could literally explode at 'switch on'. The type I used are Panasonic 1200uF 10V dc, these are low ESR and rated at 105 deg C. Part # EEU-FCA122, if you can get better ones use them. Now I diverse: I did say this applies to all mobos...indeed it does as you will se if you follow the links given, all capacitors made in Taiwan are suspect and this applies to all mobos, apparently the worst ones reading the Web are Abit which appears to stick out like a sore thumb. They type in question with the Gigabyte are the GSC green ones, note this is not saying all GSC types are bad, in this board the two to look for are the two green ones near the yellow socket and the two near the ram chips and CPU, this is the version 1 mobo I refer to here. The reason for these Taiwan bad caps is purely company Espoinage..! http://www.niccomp.com/taiwanlowesr.htm http://www.pcmag.com/article2/0,4149,939887,00.asp http://home.earthlink.net/~doniteli/index27.htm Enjoy reading.... If you want more do a Google, for motherboard and bad capacitors. Davy |
#2
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Davy wrote:
-----snip------- Now I diverse: I did say this applies to all mobos...indeed it does as you will se if you follow the links given, all capacitors made in Taiwan are suspect and this applies to all mobos, apparently the worst ones reading the Web are Abit which appears to stick out like a sore thumb. They type in question with the Gigabyte are the GSC green ones, note this is not saying all GSC types are bad, in this board the two to look for are the two green ones near the yellow socket and the two near the ram chips and CPU, this is the version 1 mobo I refer to here. The reason for these Taiwan bad caps is purely company Espoinage..! http://www.niccomp.com/taiwanlowesr.htm http://www.pcmag.com/article2/0,4149,939887,00.asp http://home.earthlink.net/~doniteli/index27.htm Enjoy reading.... If you want more do a Google, for motherboard and bad capacitors. Davy This problem is not limited to mobos. Its also been a problem with certain budget vid card manufacturers...in my case PNY. I still have older Geforce cards that have run fine for 5 years now but about 2 years ago the cap problem started to appear on vid cards and mobos. This has been going on for some time. Very annoying! |
#3
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On Sun, 14 Aug 2005 11:02:17 -0600, Beowulf
wrote: The reason for these Taiwan bad caps is purely company Espoinage..! http://www.niccomp.com/taiwanlowesr.htm http://www.pcmag.com/article2/0,4149,939887,00.asp http://home.earthlink.net/~doniteli/index27.htm Enjoy reading.... If you want more do a Google, for motherboard and bad capacitors. Davy This problem is not limited to mobos. Its also been a problem with certain budget vid card manufacturers...in my case PNY. I still have older Geforce cards that have run fine for 5 years now but about 2 years ago the cap problem started to appear on vid cards and mobos. This has been going on for some time. Very annoying! Also some cheap power supplies are affected. I had one by Deer (anything with animal name is bad anyway) and it had several caps on DC side ready to burst like balloons. And the problem is not limited to computer hardware, some customer electronics like video camera have been bitten by these bad caps. Computer usually take the spotlight on bad caps because they generally ran longer (often 24/7), ran hotter and had more stress than other electronics. -- When you hear the toilet flush, and hear the words "uh oh", it's already too late. - by anonymous Mother in Austin, TX To reply, replace digi.mon with phreaker.net |
#4
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Thanks to Impmon & Beowulf.
Yes quite right I did say motherboards, I should have said 'ALL' electronic devices and not only computers, not only power supplies as mentioned but video recorders, TV's the list goes on. It's not meant to cause panic and certainly don't apply to all capacitors of one particular make, in my case (or should I say in my computer case) on the Gigabyte 7VAXP rev 1.1 there are two green caps on this mobo and are near the yellow socket, only one was affected and they were the GSC types, in the later versions of the mobo they used better caps (as I understand), on this mobo all the others are black types. The two in question are easy to replace with a reasonable amount of soldering knowledge but you must use a temperature controlled soldering iron with a fine tip. Always pays to do a routine inspection with the power cord un-plugged and a nice soft clean paintbrush. Davy |
#5
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Bad Caps
Have replaced 4 mobos in the last month due to bad caps; all Gigabyte
GA-7VKML. Seems Gig. has a much higher failure rate than many other boards from this era. In fact, every 7vkml I have seen recently has had some bad caps. "Davy" wrote in message ... I really don't know where to post this, because you will see i applies to all mobos that use Taiwan caps, capacitors for short I have a Gigabyte GA-7VAXP Rev. 1 mobo, I usually do an inspection an a 'dust down' at various intervals, this time I noticed one cap has swollen top, these are the weak point of the casing for if there wer no 'vent's the darn thing would explode like a firecraker, leavin silver foil all over the mobo which could cause short circuiting an complete damage, the gunge they leave behind is very corrosive an will 'rot' the copper tracks on the mobo in no time Should I leave it or change it, well, I decided to change it - just t be on the safe side and to save possibility of further damage, you d really need good soldering practice and a little knowledge to do thi operation, the mobo was working fine but this time I felt "if it ain' broke I had to fix it" or damage could easily have resulted at an time The are two identical caps near the yellow socket, only one wa affected, they are green and are 1200uF 6.3 Vdc, whatever you d computers must use capacitors with low ESR and 105 deg C temperatur rating or greater, standard components could literally explode a 'switch on' The type I used are Panasonic 1200uF 10V dc, these are low ESR an rated at 105 deg C. Part # EEU-FCA122, if you can get better ones us them Now I diverse I did say this applies to all mobos...indeed it does as you will se i you follow the links given, all capacitors made in Taiwan are suspec and this applies to all mobos, apparently the worst ones reading th Web are Abit which appears to stick out like a sore thumb They type in question with the Gigabyte are the GSC green ones, not this is not saying all GSC types are bad, in this board the two t look for are the two green ones near the yellow socket and the tw near the ram chips and CPU, this is the version 1 mobo I refer t here The reason for these Taiwan bad caps is purely company Espoinage.. http://www.niccomp.com/taiwanlowesr.ht http://www.pcmag.com/article2/0,4149,939887,00.as http://home.earthlink.net/~doniteli/index27.ht Enjoy reading.... If you want more do a Google, for motherboard an bad capacitors Dav |
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