Quote:
|
Originally Posted by wallonthefly
Yes, they are working 4100's, and yes I believe I'm capable of unsoldering it.
|
Best/easiest/safest way to unsolder a surface mount chip is to get a ChipQuick kit. It includes flux and a special low-temp solder that melts ~135 degrees or so (I think). Just squirt some flux around the pins, move your iron around one side and heat the pins while melting the low-temp solder, then move to the other. You should then have enough time to either lift the chip after quickly heating the pins with your iron, or just use a heat gun (on low temp) or a hair dryer to keep the joints hot while you pick up the chip with a set of tweezers.
After picking up the chip and holding it firmly with the tweezers, apply some heat with the hot air gun and tap the tweezers on the edge of a table. The excess blobbed solder will fall right off. You can then heat the board again and clean off the blobbed solder from it.
It's a bit tricky to resolder the chip afterward just because the pins are so small/narrow, but it can be done with a steady hand and care not to heat a joint too much. Make sure the chip gets soldered back in in the same direction you pulled it out!