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PCB how to read-find specific pin

DJman

Feb 28, 2016
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Feb 28, 2016
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Hello,

I am new to your forum and in electronics also.

I have a pcb from a laptop screen and I need to identify a "pin" named LED_EN.
I have found the label LED_EN but I can't understand where the pin is

Thank you
 

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davenn

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Sep 5, 2009
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going by the way the rest of the testpoints are labelled
I would expect it to refer to the testpoint I have arrowed

Screenshot_1a.jpg



Dave
 

DJman

Feb 28, 2016
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I thought that also but it was a hole in the midle and others that look the same doesnt have?
 

davenn

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I thought that also but it was a hole in the midle and others that look the same doesnt have?


the hole in the middle just indicates that it is also a via ... a connection between board layers

look at the long row just up a bit where the light is reflecting from the board .... they all have holes too
 

DJman

Feb 28, 2016
4
Joined
Feb 28, 2016
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Thank you very much, for the quick replies. I will try it out and I let you know :)

PS. I love your signature.But you should add "DR" Sheldon Cooper "BS, MS, MA, PhD, and ScD" :p
 
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