Title: Missed a tiny trace on a PCB -fixable?
Post by: bobbletrox on January 25, 2004, 12:45:42 AM
Post by: bobbletrox on January 25, 2004, 12:45:42 AM
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I spent hours drilling blank PCBs and connecting the dots with a sharpie, and now that I've etched them -I've found a small error on one of them. I forgot to make that tiny horizontal junction to the diodes on one of the Distortion+ boards. Is there a way to fix this, or should I just scrap the board and start again?
Title: Re: Missed a tiny trace on a PCB -fixable?
Post by: Ansil on January 25, 2004, 01:12:17 AM
Post by: Ansil on January 25, 2004, 01:12:17 AM
Quote from: bobbletrox
I spent hours drilling blank PCBs and connecting the dots with a sharpie, and now that I've etched them -I've found a small error on one of them. I forgot to make that tiny horizontal junction to the diodes on one of the Distortion+ boards. Is there a way to fix this, or should I just scrap the board and start again?
hmm so are you shwoing us there where you forgot to draw that little piece. if so then do it the craig anderton way.. solder a bare piece of wire there.and it will be fine. this is diy. man. lol
Title: Missed a tiny trace on a PCB -fixable?
Post by: RickL on January 25, 2004, 01:14:04 AM
Post by: RickL on January 25, 2004, 01:14:04 AM
Don't scrap the board, just make the missing connection with a bent over bit of lead from one of the components.
I never etch circuit boards, I just use the board as a pattern to connect all the components along the black lines using the leads and extra wire if I need it. Check out 4ms for the details, they call it CBCB (for cardboard circuit board). I believe RG also describes a varient of this method in one of his tutorials at his excellent site.
I never etch circuit boards, I just use the board as a pattern to connect all the components along the black lines using the leads and extra wire if I need it. Check out 4ms for the details, they call it CBCB (for cardboard circuit board). I believe RG also describes a varient of this method in one of his tutorials at his excellent site.
Title: Re: Missed a tiny trace on a PCB -fixable?
Post by: bobbletrox on January 25, 2004, 01:25:48 AM
Post by: bobbletrox on January 25, 2004, 01:25:48 AM
Quote from: Ansilif so then do it the craig anderton way.. solder a bare piece of wire there.and it will be fine. this is diy. man. lol
Whoa! Common sense wins again :oops:
The last time I used the sharpie dot to dot method I accidently made a whole heap of wrong connections and had to do some creative drilling to fix them. The board looked like swiss cheese -but it worked! I've gotta stop being lazy and get just some transparencies made so I can do photo-resist boards. It'd save all the hassle of having to fix up all my mistakes!
PCBs 4 LIFE! :evil:
Title: Missed a tiny trace on a PCB -fixable?
Post by: Paul Marossy on January 25, 2004, 11:46:11 AM
Post by: Paul Marossy on January 25, 2004, 11:46:11 AM
You can also use a Dremel Tool with a thin cut-off wheel to cut traces. All you have to do is just touch the unwanted trace with the edge of the cutting wheel, and it cuts right through. In really tight spaces, I use the edge of a small screwdriver to hack through the unwanted trace. Haven't had to do this very often, but on occassion I have done it. It takes a steady hand. 8)
Title: Missed a tiny trace on a PCB -fixable?
Post by: Samuel on January 25, 2004, 12:25:15 PM
Post by: Samuel on January 25, 2004, 12:25:15 PM
Radio Shack also sells a set of tools that I have found useful on many occasions. Looks like a set of dental picks and scrapers. Great for scraping through unintentional PCB traces, or just making sure that IC pads didn't get accidentally solder-bridged. Also comes with a heat sink clamp.
Title: Missed a tiny trace on a PCB -fixable?
Post by: smoguzbenjamin on January 25, 2004, 12:36:26 PM
Post by: smoguzbenjamin on January 25, 2004, 12:36:26 PM
Perf :mrgreen:
Title: Missed a tiny trace on a PCB -fixable?
Post by: bobbletrox on January 26, 2004, 02:32:24 AM
Post by: bobbletrox on January 26, 2004, 02:32:24 AM
ARG!! :evil:
I just finished a perfect PCB using the photo resist method -BUT I FORGOT TO FLIP THE DESIGN.
The circuit uses opamps too, so the pins are all backwards. This has not been my weekend folks.
I just finished a perfect PCB using the photo resist method -BUT I FORGOT TO FLIP THE DESIGN.
The circuit uses opamps too, so the pins are all backwards. This has not been my weekend folks.
Title: Missed a tiny trace on a PCB -fixable?
Post by: Ansil on January 26, 2004, 02:45:11 AM
Post by: Ansil on January 26, 2004, 02:45:11 AM
Quote from: bobbletroxARG!! :evil:
I just finished a perfect PCB using the photo resist method -BUT I FORGOT TO FLIP THE DESIGN.
The circuit uses opamps too, so the pins are all backwards. This has not been my weekend folks.
theres and easy way around that too..
since normally your parts go through the board then put the ic socket on the solder side of the board. or just put the chip directly there. it isn't too hard to do i do it all the time it keeps me from havin to drill wholes. and you can still do caps and stuff throught the board