Fixing short circuit in PCB

kolyur

I have a short circuit in my latest PCB. Fortunately I was able to locate it, but now the question is how to fix it?

My inclination is just to start scraping at it with a utility knife to break the connection. But seeing as how I have about $300 in this board, I don't want to risk ruining it. The good news is that the pad will be totally covered with a terminal block, so aesthetics isn't too much of a concern. Any suggestions beyond the X-Acto?

jmg

It's easy to see and there is plenty of room, so a sharp edge is fine.
Usually we make two cuts, and it can be quite neat.

Phil Pilgrim (PhiPi)

I'd use a Dremel tool with a fine-pointed burr at maximum RPM. You've got plenty of room to work, and you want to make sure to remove enough material that the two conductors are well-separated.

-Phil

kolyur

Thanks for the tips, I got it fixed without issue.

Beau Schwabe

As suggested, make two small score lines between the pad, and the unwanted ground ... then use about the smallest flat blade screwdriver you can find as a chisel ( I have a screwdriver I specifically sharpened just for this purpose ). You could probably do it just by applying a small amount of pressure behind the sharpened screwdriver, but giving it a small tap from the back end with a small ping hammer will do wonders.

Practice this method on a scrap board first.

T Chap

Oops missed that you solved it.