Re: capacitor plague; was Re: Debian on IBM NetVista Type 6578-RAU
[EMAIL PROTECTED] wrote: > Steve, > > sr> I can almost guarantee the capacitors are oozing onto the motherboard. > > Sure enough, six of the capacitors alongside the > cpu are bulging. All are from the same manufacturer. > > The problem is well documented. > http://en.wikipedia.org/wiki/Capacitor_plague > > I'm tempted to try to replace the caps. The only > deterent is fear of breaking one of the delicate > traces on the p.c.b. Has anyone succeeded in > resurrecting a board from this failure? > > Thanks,... Peter E. > Yes, I got an IBM NetVista (2257-B4U) for using parts (it was just rebooting like crazy). On closer examination, I found lots of capacitors had bulged. To try my luck I ordered equivalents for all electrolytic caps on the motherboard. Its been working nicely ever since. /KS PS: you need to have good soldering skills to put the caps on though. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: capacitor plague; was Re: Debian on IBM NetVista Type 6578-RAU
[EMAIL PROTECTED] wrote: sr> I can almost guarantee the capacitors are oozing onto the motherboard. Sure enough, six of the capacitors alongside the cpu are bulging. All are from the same manufacturer. The problem is well documented. http://en.wikipedia.org/wiki/Capacitor_plague I'm tempted to try to replace the caps. The only deterent is fear of breaking one of the delicate traces on the p.c.b. Has anyone succeeded in resurrecting a board from this failure? *sigh*, multiple times. The hardest thing is removing the old caps and desoldering the holes, but all in all it's not that bad. Keep the iron hot enough to melt the solder but not hot enough to damage the trace. Practicing on an old board first would be a good idea of course. FYI, you don't need to match the voltage of the caps, just the capacitance and diameter. Cf. http://www.capacitorlab.com/basic/index.htm Good luck, -- Henry Luciano Mote Marine Laboratory IS Director 941-388-4441 x409 "The computer ... is an Old Testament God; lots of rules and no mercy." - Joseph Campbell -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: capacitor plague; was Re: Debian on IBM NetVista Type 6578-RAU
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 KS wrote: | [EMAIL PROTECTED] wrote: |> Steve, |> |> sr> I can almost guarantee the capacitors are oozing onto the motherboard. |> |> Sure enough, six of the capacitors alongside the |> cpu are bulging. All are from the same manufacturer. |> |> The problem is well documented. |> http://en.wikipedia.org/wiki/Capacitor_plague |> |> I'm tempted to try to replace the caps. The only |> deterent is fear of breaking one of the delicate |> traces on the p.c.b. Has anyone succeeded in |> resurrecting a board from this failure? |> |> Thanks,... Peter E. |> | Yes, I got an IBM NetVista (2257-B4U) for using parts (it was just | rebooting like crazy). On closer examination, I found lots of capacitors | had bulged. To try my luck I ordered equivalents for all electrolytic | caps on the motherboard. Its been working nicely ever since. | | /KS | PS: you need to have good soldering skills to put the caps on though. | | hi guys, i scrapped mine, i couldnt see taking the time to repair when something else is likely to go wrong with this old computer anyway. i dont know how they crammed all those parts into that tiny case!! with decent motherboards so cheap, id recommend going that route. i just built my youngest a decent desktop with an msi nforce motherboard i got for $14! with spare parts lying around hes got a gig of ram desktop with a 120 gig hd, and older nvidia card for less than $100 investment. if your good with soldering of course maybe try it. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHioWo1L48K811Km0RAlCaAKCOQPopoNtopJ8RMOgy+wZBT/UZ+gCdEIDH 67K9mTAvkH7T4BLTQMf4jno= =SOF/ -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: capacitor plague; was Re: Debian on IBM NetVista Type 6578-RAU
Henry Luciano wrote: > > *sigh*, multiple times. The hardest thing is removing the old caps and > desoldering the holes, but all in all it's not that bad. Keep the iron > hot enough to melt the solder but not hot enough to damage the trace. > Practicing on an old board first would be a good idea of course. > I used a solder suction pump along with the soldering gun. As soon as the solder melted it was sucked up by the pump. Helps a lot if you already have lots of experience using the equipment :-) You also have to make sure that when you solder the new caps, you can't use too much solder as there isn't much space around. > FYI, you don't need to match the voltage of the caps, just the > capacitance and diameter. Cf. http://www.capacitorlab.com/basic/index.htm > I got the caps after listing their ratings from the original caps themselves from http://www.badcaps.net/ They package took about 10-12 days to arrive though. HTH, KS. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: capacitor plague; was Re: Debian on IBM NetVista Type 6578-RAU
On Sun, Jan 13, 2008 at 09:33:01PM -0500, KS wrote: > Henry Luciano wrote: > > > > *sigh*, multiple times. The hardest thing is removing the old caps and > > desoldering the holes, but all in all it's not that bad. Keep the iron > > hot enough to melt the solder but not hot enough to damage the trace. > > Practicing on an old board first would be a good idea of course. > > > > I used a solder suction pump along with the soldering gun. As soon as > the solder melted it was sucked up by the pump. Helps a lot if you > already have lots of experience using the equipment :-) > > You also have to make sure that when you solder the new caps, you can't > use too much solder as there isn't much space around. > > > FYI, you don't need to match the voltage of the caps, just the > > capacitance and diameter. Cf. http://www.capacitorlab.com/basic/index.htm > > > > I got the caps after listing their ratings from the original caps > themselves from http://www.badcaps.net/ They package took about 10-12 > days to arrive though. I'm inspired. I've got a really nice video card sitting on my bench with a bulged cap. I've been thinking I might try replacing that cap, but haven't got around to it yet. Triple-head here I come!! A signature.asc Description: Digital signature
