Electronics > Beginners

Using a BoardViewer

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M1ch4L:
Hello.

I need help. A friends notebook with motherboard X553SA rev 2.0 it´s completely dead. No power light, no charging. I checked the MB and found some bad smd caps on it … BUT I cant identify them … by the way I must say I am a beginner in repairing … so I was looking around on the net and found BoardViewer , this shows all the components on the MB with Pins and some more Info, Data … I was so happy  ;D but only for short time  :palm:
My first question is what means this info /NBS_C0805_H57_000S/ about the capacitor? What I know 0805 is the measurement … Is there somewhere a table about about the voltage and farad?
Next question is how can I use the check points on the board? I see when I sign one check point in the BoardViewer, some other points, pins are lighting up too … Thanks!
I attach one picture with this bad cap on BoardViewer:

ataradov:
Board viewer only shows the layout, you also need a schematic.

But in this this case you can see that the cap is between the ground and voltage line of the DDR. It can probably be safely removed. If something does not work without it, then it is likely something else is broken too.

M1ch4L:
Thanks for your fast reply!

I try to find the schematic ...
So probably the notebook can work normally without this NBS_C0805_H57_000S capacitor?

The next bad one is this:

ataradov:
It is hard to guess from the signal names.

But generally for digital electronics if the capacitor goes to ground, it is likely that is alone is not important for the operation of the device. As long as you don't just remove all of them.

Also, how do you know they are bad?

M1ch4L:
Ok, thanks for the lesson.

I checked the capacitors only with continuity test /beep test/ but now that you ask I have a feeling that its not the right way to check them … or?

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