I'm determined to find the most effective way to recap SM aluminum caps on these old Classic Mac logic boards. While I've had limited success using a soldering iron, patience and some excellent Kester #44 lead 63/37, I still cannot get a high quality joint when I do them.
I'd like to have a higher success rate, and I can't do it with a soldering iron. Basically, I'm replacing the stock bad aluminum caps (47's and 1uf) on portable Macs using standard radial electrolytics by bending the legs and soldering them in place on the old pads. I've screwed up a few boards this way and have now taken to dripping solder on the pad first and quickly heating the solder while holding the cap in place. It's an ugly job with an ugly end product, but not by choice. I barely get the cap to stick. I've learned by experience NOT to heat the pad or touch it with the solder pencil (25w Weller) So, couldn't I use some solder paste and a micro-torch? Basically, coat the pads in paste and work a small flame over the pad? Maybe protect the perimeter of the pad with some kapton tape and have at it? I'm a hobbyist and I'm not ready to invest in a professional rework station. Any suggestions from experienced people would be greatly appreciated. -- ----- You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/
