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Old 04-28-2007, 08:45 PM   #1 (permalink)
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Default Identifying unreadable capacitors

I've found the bad components! They're two little black boxes side by side, and they're blown and have oozed a bit onto the board. How do i Identify them so that i can buy replacement components and solder them in, if i can't read the top of them because they're blown?

also, should I be suspecting that some other component caused them to blow?

Thanks!
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Old 04-28-2007, 08:56 PM   #2 (permalink)
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Default Re: Identifying unreadable capacitors

either post a pic, or give me your motherboard number.
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Old 04-28-2007, 09:31 PM   #3 (permalink)
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Default Re: Identifying unreadable capacitors

It's a Dell Inspiron 4150.
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Old 04-28-2007, 09:59 PM   #4 (permalink)
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Default Re: Identifying unreadable capacitors

You could talk to Dell, they could tell you what to replace it with, or you could see if you warranty is still valid.
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Old 04-28-2007, 10:23 PM   #5 (permalink)
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Default Re: Identifying unreadable capacitors

he open his comp, wouldnt that break the warrenty since he tampered with the insides?
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My computer uses 1.5A-load, .8A-idle, .65A-standby, .05A-turned off on 125V.
"The spaces between your fingers were created so that another's could fill them in."
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Old 04-29-2007, 12:22 PM   #6 (permalink)
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Default Re: Identifying unreadable capacitors

Yeah, there's no way this is under warranty. It's a dell insiron 4150 board, i don't see an actual serial number on the board anywhere. I've been trying to find schematics online, but since i'm new to the whole component-level thing, i don't even know if that will tell me what I need to know.
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Old 04-29-2007, 01:19 PM   #7 (permalink)
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Default Re: Identifying unreadable capacitors

What i'm wondering now is if it would be possible to identify their specifications using a multimeter. Each of the bad components has two contact points on the board, so I assume that they're capacitors (also because they're oozing), and i wonder if i could take multimeter readings in order to determine their specifications. They work sometimes, so maybe if i took periodic measurements, and then took my highest readings and rounded up?
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Old 04-29-2007, 04:02 PM   #8 (permalink)
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Default Re: Identifying unreadable capacitors

there aren't any numbers on top of the capacitors , theres either a black or navy blue cover around the capacitor which tells you how much volts it uses and etc. If cant identify it then look at other working capacitors that are same size and diameter. Dell wont fix that kind of problem, if its under warranty they will replace the motherboard, but if you don't have any warranty you will have to look at different motherboards to find matching capacitors. you wont find the same capacitors in Radio Shack or any where else so dont bother looking for them in stores. Trust me i went through the same hassle.
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Old 04-29-2007, 07:27 PM   #9 (permalink)
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Default Re: Identifying unreadable capacitors

I just went on ebay and bought a dead inspiron 4150 board. I'll pull the capacitors off of that when it gets here, thanks for all your help.
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Old 04-29-2007, 07:40 PM   #10 (permalink)
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Default Re: Identifying unreadable capacitors

how much was the dead board, the capacitors of that board could also be fried...
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My computer uses 1.5A-load, .8A-idle, .65A-standby, .05A-turned off on 125V.
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