- Forum: Current Mac Hardware
So when are they going to go back to leaded solder? How many generations of MacBook have this problem now, total?? Mine was a 3,1. There have been endless models since then with these problems. It's kind of obvious now that the MacBooks have too many temperature extremes for the unleaded solder. The end result is more waste. Solder can still use lead when the application requires it, and this is clearly a case of requiring it.