rear window defroster

Can anyone tell me if there is a way to repair a rear window defroster. There are 3 or 4 line on it that no longer work. Thanks in advance

Reply to
e
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You might have some success with the conductive paint used to repair broken traces in printed wiring boards. You might find this at Radio Shack, but you will probably have to go to a more specialized electronics supply company. I know that Active Electronics has stores in major cities in Canada. It might be available by mail from places like Digikey or Jameco.

You will have to locate the exact place where the line is broken, clean it carefully with alcohol, use a fine-tipped brush, cram the paint into the slot, and cross your fingers. If you have an ohmmeter, you could connect it across the window and watch it as you're applying the paint to see if you are making a difference.

Assuming success, you can trim off the excess paint with a razor blade after the paint dries. Cut right next to the line and scrape outward so as not to disturb the connection. You will probably never get it to look as thin as the original line, but consider yourself very lucky if you get this far.

e wrote:

Reply to
BBB

Most autoparts places will sell the conductive "paint" with small brush and thin-line template to repair this. The ohmmeter suggestion in the post above is best to narrow down where the breaks are. Without the ohmmeter you may have to follow each line with a magnifying glass to see the cracks to repair. Sounds funny but it works, just takes more time.

Reply to
John

You'd probably need a pin to get far enough down into the glass to actually touch the conductive material. You'd have to be pretty careful not to further damage the conductor in the process. You'd be looking for a small change in resistance due to the effect of the other (intact) lines that are all connected in parallel.

What I had > Most autoparts places will sell the conductive "paint" with small brush and

Reply to
BBB

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