Here’s a video of how to remove an SMT chip from a board with a minimum of work and fuss.
Without knowing how to do this, it’s easy to damage pads on the board, break pins, overheat other components, etc.
But, with a slightly different method, it’s pretty simple.
We’ll be using an air embossing tool.
(I have this one… )
First, you heat up the whole board a bit otherwise you can damage nearby components via thermal shock.
Next, heat up the chip in question until the solder melts on ALL the pins.
Then, use tweezers to lift off the chip.
At this point, you’ll still have an adequate amount of solder nicely on the pads and therefore we won’t be using any solder.
Set the replacement chip down, align the chip and then align the pins, and use your iron to tack down ONE pin.
Then align all the rest of the pins and tack down the diagonally opposite pin.
Now solder them all into place.
Here’s a video. I’m removing an 8 pin SMT audio driver.