Erasing 5V rail on the shield

Forum 2005-2010 (read only) General Frequently-Asked Questions
1

Hi,

I am want to convert a shield to something suitable to my project. Now, l'problem is that I need to erase 5V track / rail from the shield's PCB. Currently rail connects about 10 holes, but I need all those holes completely and utterly separated.

I thought it will just be a matter of scrapping off the unwanted metal, but to my dismay, even after removing all the metal and getting down to the plastic (about 0.5mm) is still get electrical continuity.

Can somebody help? Do I just need to dig deeper into the track or is it it the case that shield is multi layered and only cutting through all the way would do it?

cheers

2

What shield is it?

That surprises me that cutting the traces didn't stop the connection. Are you sure they're completely separated?

3

track is metalic silver, cut is green and plastic is coming out.

Ok, I do not want to cut all the way to the other side, since that would weaken the board and I need to push some pins there.

4

Misterry resolved!

For the posterity: there is another, painted over track on the back side. When you cut both top and bottom one, you cut it for good.

5

In other words, plated through holes on a double sided board...