Posted 06 December 2012 - 23:17
I've got a number of old boards that are of no use or do not work that have some precious logic chips on them I'd like to use!
Unfortunately, not sure if it's due to age of chips, heat taken by chips or just plain cheap-skate manufacturing that makes them near impossible to desolder using the 'blob solder' method, tried on 4 of them in various blob ways and they've all cracked or split or came apart entirely rendering the chip useless. These are all on double sided PCBs which makes them even more of a pain to remove.
So I'm asking for suggestions on how to remove them but keep them in working order (assuming they are in working order), I've got a soldering iron, desolder braid and a solder pump but don't think that'll work. I was looking at hot air reflow stations but they seem more for SMD components and even if they're not, £50 being the cheapest on ebay from china, not going to risk buying it and it being useless. I was also thinking about a similiar method to how components are soldered in china using 'liquid solder baths' but don't really have a clue oh how I'd do it, or if it'd even work!
So yeah, any ideas?