Soldering onto conductive paint

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Well a search tells me the IC is a single in line special. When you say its lost a pin do you mean its snapped off near the package ? Even if it has I bet you could solder a single strand of wire to whatever is left of the old lead, even if its flush with the package. Then put a tiny dab of epoxy over the connection and run the strand of wire through the PCB hole and scrape and solder to the print it connected to.

I wouldn't think conductive paint a good solution tbh from what you describe.
 
I would follow Mooly's procedure, but I would first use an Exacto to remove some of the plastic from around the broken pin. You don't need much, and can probably get ~1mm cleared without destroying the package integrity. Then run the wire to the former pad connection. ("Solder pad" doesn't confirm whether this is through-hole or SMT.)
 
Yes there are conductive Epoxy's, But the last one I used was so thick I could barely get it out of the squeeze tube.
I still have it but it is a solid rock now!! He,he,he

You can try gluing the end of a piece of wire-wrap wire using some conductive paint and solder the other end were it needs to go.

I have used this method a few times and it works well.
Here is one such instance,

http://www.diyaudio.com/forums/planars-exotics/196631-apogee-speakers-construction.html#post3409337

That one was done using a Silver Paint pen in 2002.

Another time (buried in these threads) I I used some Nickel print and also a rear window defogger repair kit ( copper paint) to make a connection to a broken off of a Aluminium wire mesh tab on my DIY Esl.

Both are still holding and still working to this day.

jer :)
 
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