

| Subject: | Re: cluster troubleshooting |
| From: | pickle vanagon |
| Date: | Wed, 6 Jun 2012 09:00:16 -0400 |
The radio shack around the corner had this stuff so I got it. It's neat! Strangely, it seems its only conductive once it has cured after a long time. This threw me off at first. Anyways, I kind of got it working last night, according to my voltmeter, but it seems very shady and I expect it not to hold. (I'm worried both about losing connection and causing a short... those tracks are close!) The repair is right on a crease, so the copper tracks don't like to stay flat there. So rather than put this in I plan to do what Jarrett did here: http://www.kpcnsk.com/?p=138 Otherwise, I'll have this unobtainable and nearly-unserviceable part lurking behind the cluster getting ready to eat more of my time/sanity at any moment. I'm getting some stranded 22awg wire in a bunch of different colors (and some 20awg for the power/ground lines), db25 connectors, and a breadboard for the resistors/capacitor. Hopefully this will go well. Anyone know why my foil has a place for a resistor in the resistor bank where there's no resistor (and so no connection?) It appears to be stock like this. I looked at ads for foils and found others with the same configuration. On Tue, Jun 5, 2012 at 9:24 AM, David Beierl <dbeierl@attglobal.net> wrote: > At 08:56 AM 6/5/2012, pickle vanagon wrote: > >> So I'm going to give that a try. I plan to sand off the thin side (the >> side that rests against the cluster) paint over the broken parts, and >> then---that's it, right? >> > > The stuff is polyester - you may have an easier time with a belly-blade > X-Acto knife, either coming in at a very shallow angle or just scraping. > Once you get through the plastic you can scrape the foil at 90* to get it > shiny-bright, but remember it's quite thin. > > Prepare to spend a long time rolling and shaking the paint to get the > copper up off the bottom. Also I've never been able to keep an open bottle > for long periods without it drying up. > > Don't put it on too thick. Not sure what too thick is, but it's meant for > rigid surfaces and you don't want it cracking. Dry thoroughly. > > Electronics techs use a variation on this using silver paint instead of > copper. One way is in a pen like this: http://www.radioshack.com/** > product/index.jsp?productId=**3964901<http://www.radioshack.com/product/index.jsp?productId=3964901>. Be sure to read the reviews re shaking it enough and using lacquer > thinner to keep the tip clean. This stuff is more conductive than the > copper and meant for flexible circuits as well as rigid ones. > > > I think can probably not worry about having those connections exposed >> there in a very small area. >> > > Suggest at least a piece of good quality (Scotch 33+) electrical tape to > keep the air off, but it may be overkill. > > Yrs, > d > > >
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