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HOW TO test A MOTHERBOARD with a Multimeter

Last response: in Windows XP
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February 9, 2012 6:55:21 PM

How to test a Motherboard outside the case with a Multimeter?
a b V Motherboard
February 9, 2012 7:46:03 PM

What are you trying to test exactly? There are a few hundred connectors on the motherboard you can check. Pretty much you look for the component you are trying to find that's bad, connect the tester leads and read the voltage/current readings. Thing is, there are so many different ones for different areas you need to find out what is the right settings for what you are looking at.
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February 16, 2012 9:59:17 AM

hang-the-9 said:
What are you trying to test exactly? There are a few hundred connectors on the motherboard you can check. Pretty much you look for the component you are trying to find that's bad, connect the tester leads and read the voltage/current readings. Thing is, there are so many different ones for different areas you need to find out what is the right settings for what you are looking at.

Hi,
I have 3 XP computers that have failed in the past 3 years. I suspect that either the Motherboards or the CPU's are probably the reason they did! So before chucking them out,I wondered if there was a way I could easily check them with a
Multimeter.Of course not being a Techkie guy,I would need detailed instructions,on how to do this.Thanks for your help.
Van
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a b V Motherboard
February 16, 2012 12:44:48 PM

There is no single way to test the motherboard, they have hundreds of components to test. Easiest thing to check is for bad capacitors, happens a lot. They'd be puffy or actually burst at the tops.

Aside from that, you'd have to basically learn how the motherboards work, what part should have what voltage, resistance, etc..., and start checking them. Plus they are usually built in layers, have different other chips on them aside from the CPU. Good project to play with if you really want to do this, but don't except someone to say "just hook up wire A to part 1, wire B to part 2, if you get no reading it's bad".

Failures could be from he power supply also, or the video card. Those two often cause computer issues.
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February 17, 2012 10:26:24 AM

hang-the-9 said:
There is no single way to test the motherboard, they have hundreds of components to test. Easiest thing to check is for bad capacitors, happens a lot. They'd be puffy or actually burst at the tops.

Aside from that, you'd have to basically learn how the motherboards work, what part should have what voltage, resistance, etc..., and start checking them. Plus they are usually built in layers, have different other chips on them aside from the CPU. Good project to play with if you really want to do this, but don't except someone to say "just hook up wire A to part 1, wire B to part 2, if you get no reading it's bad".

Failures could be from he power supply also, or the video card. Those two often cause computer issues.

Hi,
I kinda suspected that there would'nt be a simple way to do this,like touch both ends of the MB with the Multimeter prods,and if the current flowed thru,then we could assume she was ok.What a dreamer am I.However,as you suggest I will check the capacitors,power supply and Video card (I have replacements),Thanks again for your help.
Van
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Best solution

a b V Motherboard
February 17, 2012 12:59:07 PM

Take a look at this, if you have not seen something like it http://www.youtube.com/watch?v=YJS_Jqw3Sy0&feature=rela...

As you can see, lots of parts to the thing :-) And just about any failures in any of them can cause it not to work.
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February 19, 2012 9:41:47 AM

Hi,
Youtube is not possible for me,as I"m on Dialup connection.Thanks for trying to help.
Van
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February 19, 2012 9:42:38 AM

Best answer selected by jajoa.
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