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Author Topic: Motherboard Re-Cap  (Read 2575 times)

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Offline Spanky

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Motherboard Re-Cap
« on: Thursday, April 01, 2010, 22:49:14 PM »
Most all electrical components contain capacitors. Modern motherboards typically contain solid-state caps which can still leak or explode but are supposed to last longer. The older ones, leaking is common, especially in lower-end ones. Not too long ago I did some work for this woman that bought a computer from me and in exchange for the labor I did (backing up files and whatnot) she gave me her old computer. It's an older HP, based on a Intel Celeron. It's not high end but it still has plenty of life left in it as a basic computer to surf the web, listen to music, watch videos. I figure, I got it pretty much for free so if I drop less than $30 on new capacitors and re-sell it for double that or more, that's a profit and an invaluable learning lesson in one deal. So I got home with the computer and looked inside and here's the horror of what I saw:

http://dl.dropbox.com/u/464376/headshot/mobo_recap/DSC05852.JPG
http://dl.dropbox.com/u/464376/headshot/mobo_recap/DSC05855.JPG
http://dl.dropbox.com/u/464376/headshot/mobo_recap/DSC05856.JPG

Basically, all those capacitors feed power to the CPU. Leaky caps in this spot could mean power issues and a lot of frustration. So I read around and whenever you attempt a recap, it's a good idea to replace all the caps above a certain value (I forget exactly, something like 470uF). Since they're relatively cheap, I bought enough to replace all the ones on the board and enough to have spares in a pinch. I purchased them from Mouser.

I haven't done the recap yet but I will and I'm going to record it and run it as a time lapse and put it on YouTube. Should be pretty interesting, especially since I haven't replaced capacitors before (only taken them off as a test of my skills).

*EDIT*
First Progress:
http://dl.dropbox.com/u/464376/headshot/mobo_recap/DSC05867.JPG
http://dl.dropbox.com/u/464376/headshot/mobo_recap/DSC05868.JPG
« Last Edit: Friday, April 02, 2010, 22:39:11 PM by Spanky »
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Offline Knight

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Re: Motherboard Re-Cap
« Reply #1 on: Friday, April 02, 2010, 06:49:41 AM »
Can't wait to see the time lapse. What model is the HP OEM and what cpu/mobo are you doing this on? I have an HP oem Celeron D desktop that has at least one leaky cap. Some specific info would be great.
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Offline Spanky

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Re: Motherboard Re-Cap
« Reply #2 on: Friday, April 02, 2010, 14:59:25 PM »
I might do it today actually, it's windy out and not much to do inside. Here's the specs:

HP Pavilion A500Y
Mobo: MS-6577 v4.1
CPU: Intel Celeron 2.6GHz 128k 400MHz SL6VV

Again it's not high-end but netbooks and those mini-computers are slower so this still has a purpose. I think the mobo will take 2GB of DDR400 which isn't bad.
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Offline Spanky

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Re: Motherboard Re-Cap
« Reply #3 on: Friday, April 02, 2010, 17:30:01 PM »
I am a noob. I just spent like 20 minutes or more trying to get just 1 cap done. I need a solder sucker. This project might have to wait a while.
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Offline BlueBlaster

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Re: Motherboard Re-Cap
« Reply #4 on: Friday, April 02, 2010, 21:01:46 PM »
=\
The worst part about soldering is when you need a solder sucker. Sometimes you can get lucky and heat up the solder and quickly flick it off with your finger, but when your working in a cramped space with capacitors . . . have fun.



Offline Spanky

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Re: Motherboard Re-Cap
« Reply #5 on: Friday, April 02, 2010, 21:25:02 PM »
Yea I thought I could heat it up and keep the solder fluid and just push the cap through. Maybe I'll try again tomorrow. Good news is that I have a nice camera position for the time lapse :)
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Offline Spanky

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Re: Motherboard Re-Cap
« Reply #6 on: Friday, April 02, 2010, 22:38:54 PM »
Muahaha, tried again and succeeded!

http://dl.dropbox.com/u/464376/headshot/mobo_recap/DSC05867.JPG
http://dl.dropbox.com/u/464376/headshot/mobo_recap/DSC05868.JPG

Blue-marked ones are ones that I replaced. I did scratch and really burn one spot but I had a helluva time with that one for some reason. I don't think I will be doing a video though, as cool as it would be.
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Offline Knight

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Re: Motherboard Re-Cap
« Reply #7 on: Friday, April 02, 2010, 22:49:46 PM »
Aw I was really looking forward to the video. :-\
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Offline BlueBlaster

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Re: Motherboard Re-Cap
« Reply #8 on: Saturday, April 03, 2010, 00:53:40 AM »
Damn, nice job Spanky.



Offline Spanky

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Re: Motherboard Re-Cap
« Reply #9 on: Saturday, April 03, 2010, 01:34:09 AM »
Damn, nice job Spanky.

I dunno about that yet :) I haven't turned it on yet.
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Offline Spanky

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Re: Motherboard Re-Cap
« Reply #10 on: Wednesday, April 07, 2010, 14:02:09 PM »
Thanks for contributing to the thread.
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Offline Spanky

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Re: Motherboard Re-Cap
« Reply #11 on: Saturday, April 10, 2010, 00:36:13 AM »
Go shine my shoes.

Also, I've so far replaced the bulging/leaking caps. Haven't had the time to fire it up yet. The power supply I want to use has a leaking cap but I know it still works... I don't know what to do with it.
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Offline Spanky

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Re: Motherboard Re-Cap
« Reply #12 on: Saturday, April 10, 2010, 04:12:01 AM »
To be honest, I don't know a whole lot about how a capacitor works or what chemicals they have inside. I should read about it... so many things to do =\
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Offline Spanky

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Re: Motherboard Re-Cap
« Reply #13 on: Monday, April 12, 2010, 22:44:35 PM »
Well I got time and a clean enough workbench to test it out and it works. I'm going to disassemble and clean everything up and I'll take final pictures then. Some people advice to replace all the caps but since this is a budget computer that I'll sell at a budget price, I'm not going to take the time (or money) to replace the non-bulging ones.
It's like shaving your pubes to make your junk look bigger.
Might look bigger, but it aint.....

 

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