Don't let the IPA get up into here.

It may take several baths to clean all the corrosion. Once you think you want to try it again, put the motherboard out on a paper towel and let it dry for at least 24 hours.

If you want a higher chance at success, get a jar and fill it a good way with silica packets, leaving room for the motherboard. Make sure no IPA is on the motherboard when you do this. Have it sit in the can for a minimum of 48 hours. I left it in for a week, or until the liquid from the keypad left.

Your LCD may have liquid in it. Put it in the can too, as the silica can make your screen look like brand new.