Anyone that wants to attempt to replace these surface mount chips, it's not all that hard to do without anything special. Add solder to the legs of the old chip to make them easier to get melted for removal, then use a pick or similar to bend back each lead off the board as you unsolder them one at a time until all are folded back against the chip. The chip is glued to the board, so pull up off the board with pliers. Clean off all solder with wick, add some flux to the connections and to the chip legs, line up the legs and carefully solder. I've done hundreds of them. These type are easy. A little tougher on 100 pin ic's.
The hard part is getting these Chinese chips. They are pretty much made special for the manufacturers and getting info and parts in your hands near impossible many times. Good job in getting the board fixed.