Fixing a trace on an old electronic card
 

I have a very simple varistor card with 4 varistors on it. 3 of the Varistors are blown, and some of the copper traces are gone.

Is there some sort of product for fixing copper traces on a card? These traces are quite wide, about 1/8th of an inch.

This is what it is supposed to look like:

http://forums.pelicanparts.com/uploa...1247694697.jpg

http://forums.pelicanparts.com/uploa...1247694711.jpg

Here is what it looks like now. I need to repair the bottom. I have the parts to replace the side connectors and the varistors.

http://forums.pelicanparts.com/uploa...1247694991.jpg

http://forums.pelicanparts.com/uploa...1247695007.jpg

Yes there is.


..it's called "wire."

http://forums.pelicanparts.com/uploa...1247696313.jpg


:D

(just jumper)

BTW, no, I did not do the solder fix...

Ewwwwww!!!!! http://forums.pelicanparts.com/suppo...leys/drink.gif

I'm not sure if that board is salvageable. It's got more issues then just the missing traces.

Did they use a torch for that?

I am sure it made quite a sound when the varistors blew.

The board itself isn't burned, just blackened from the varistors letting the magic smoke out.

You can buy new, custom boards online in small quantities, cheaper than you think. I think the last ones I did were under $20 each, for 3. Free layout software online. http://www.expresspcb.com/ExpressPCBHtm/Costs.htm

Or clean them up, and use wire.

When you get the new MOVs leave the leads long and wrap them around the post for the spade lugs over where the trace is burned.

The FR part of FR4 stands for fire resistant.

+1 - cleanest solution too.

George

If you want to learn a new skill fine. I don't think the 3 for $49 boards are that thick