> > I have a gas torch > > Yikes! Why?
> I have a electric heat gun of the paint removing variety. > It has two temperature settings. I could *lend* it to you. Craig I wouldn't bother with copper heat speading tricks. The aim is to heat the chip and the PCB evenly. Move the hot air stream accordingly. Depending on its width and temperature, move the heat source closer or further. If the hot air beam is narrow, move it around the perimeter of the chip. You can't just heat the chip anyway, the PCB will suck too much heat away, by the time the solder is melted you have a dead chip. Remember you need the heat between the chip and the PCB! The PCB is less heat sensitive. I would concentrate more on te PCB. But remember to not do something really annoying - like melting the solder on some of the grit around it (chip caps and resistors), which is probably unavoidable and also harmless, but annoying would be then to knock the PCB accidentally and have the grit move everywhere - which would be an automatic BER. You don't really need any specialised equipment. I have a butane soldering torch that I can take the solder tip off to create hot air. I've brazed glasses frames with it. I'd use that, but because the hot air beam is narrow I'd have to constantly move it around, also because it's hot - keeping it too long in one spot would actually burn the PCB. Volker -- Volker Kuhlmann http://volker.dnsalias.net/ Please do not CC list postings to me. _______________________________________________ Linux-users mailing list [email protected] http://lists.canterbury.ac.nz/mailman/listinfo/linux-users
