Value of Bad SMD Capacitor

[saf]

Can someone here please tell me how to find out the value of a bad smd capacitor to replace it. The small caps dont have anything written on them, how do we get them replaced if we dont know the value? What is the trick or a straight forward way to find? These are on the motherboards usually in the power section.
Here is the image of the cap:
http://media.digikey.com/photos/Keme...LCC%20Caps.jpg

[japlytic]

Re: Value of Bad SMD Capacitor

Welcome, saf!

As far as I know, SMD ceramic capacitors do not have any marking on them, unfortunately.

[Agent24]

Re: Value of Bad SMD Capacitor

Normally one would have to look up the schematic and find out, but if it's a motherboard you're probably screwed.

Alternatively, you could remove the same capacitor from an identical working board, and measure its capacitance with a meter.

Or (worst way) you could just guess, go with something the same size\colour, or a common value like 100nF


If it's in a specific area like VRM, you may be able to find another board with similar layout and see what it uses in the same area. Or on a multi-phase VRM measure capacitance of another capacitor in the same location on another phase etc.

[saf]

Re: Value of Bad SMD Capacitor

Thanks for your response guys and many greetings and wishes to all the members sharing their information with every one.
Is there a site or link where we can hve the schematics for these boards? I had that link somewhere but am not able to find it.
@Agent24; your idea gave me a fantastic idea. As every component has a number, we can ask for its information on threads like this, like I want to find the value of capacitor no. PC176 on a HP-dv9000 board, so any one who has a board can measure and bring it on these threads for our help.
Hope i'll get it out quickly. I think this is the easiest way. Once every one starts using this technique, it 'll be more easy for every one.

[Agent24]

Re: Value of Bad SMD Capacitor

You'll just have to use Google, I guess. You get an interesting result if you just search "Motherboard schematics"

Thing is a lot of people don't want to \ aren't skilled enough to remove parts from their working boards without damaging the board\part.

[saf]

Re: Value of Bad SMD Capacitor

I have been looking to start a new thread, but, it may sound stupid, I could not find from where to do it. I checked all the links as well. Can you please tell me how do I start a new thread.

[Agent24]

Re: Value of Bad SMD Capacitor

Go to the sub-board on the forum where you want to post your thread, and click the 'New Thread' button in the top left.

[saf]

Re: Value of Bad SMD Capacitor

Yep! Thanks a Lot again.
Is it not like, if I post a new thread, it will be notified to all the people in all the threads or only to that particular group?
Its a bit confusing for me, sorry! This is my first registration in any Forum.

[Agent24]

Re: Value of Bad SMD Capacitor

Users of the forum can subscribe to each sub-board etc and receive an email showing which new threads etc have been added.

However this is not the default so I think most of the time you just have to wait until other people read the forum and discover your thread.

You can also subscribe to a thread, and be notified by email when someone replies to that particular thread.

More information can also be found here: https://www.badcaps.net/forum/faq.php

Hope this helps!

[saf]

DV9000 Board Capacitor #PC176, Wats the Value plzzz???

Well! after several attempts I have come to a conclusion tht there is no way of finding the actual value of a Bad SMD Capacitor (Ceramic) unless you have a genuine schematic.
But, There is a Simple Way Out

if someone who has this board can favor to just measure this component and post its value here.(if your's is not bad either)
Its the PC176 in the power section of HP-DV9000 laptop Board.
(Please see the attachment for its position on the board.)

[Topcat]

Re: DV9000 Board Capacitor #PC176, Wats the Value plzzz???

We don't need the IDENTICAL thread in 5 different forums.

[aftonr]

Re: DV9000 Board Capacitor #PC176, Wats the Value plzzz???

Well! after several attempts I have come to a conclusion tht there is no way of finding the actual value of a Bad SMD Capacitor (Ceramic) unless you have a genuine schematic.
But, There is a Simple Way Out

if someone who has this board can favor to just measure this component and post its value here.(if your's is not bad either)
Its the PC176 in the power section of HP-DV9000 laptop Board.
(Please see the attachment for its position on the board.)

here is a schematic for the HP-DV9000 hope it helps

[saf]

Re: DV9000 Board Capacitor #PC176, Wats the Value plzzz???

We don't need the IDENTICAL thread in 5 different forums.

How am I to get response from all the related threads? Will it reach out every one on this forum if its posted just in One thread?

[saf]

Re: DV9000 Board Capacitor #PC176, Wats the Value plzzz???

Thanks a lot aftonr. I am not sure how to refer to schematic diagrams, but let me try.
Thankyou again. Would it be exactly same for all models Or could there be any sub-models?
Thanks again.

[Agent24]

Re: DV9000 Board Capacitor #PC176, Wats the Value plzzz???

How am I to get response from all the related threads? Will it reach out every one on this forum if its posted just in One thread?

Like I said, you post your question in the appropriate forum (once, in one forum, or you annoy people) and then you wait until people discover it and reply to it.

If nobody replies, chances are they don't have an answer to your question.

But as aftonr was kind enough to post that schematic, it looks like may be in luck!