As I said in another thread, we have 4231s. I don't mind them going out free if the people doing the repair do it for a reasonable amount of money.

Easiest way to remove the package is to very carefully cut the legs off two sides with a very sharp knife then flood both the other sides one at a time with solder (a hube solder blob over all 25 pins) and gently lift that side of the chip up. When the chip is removed, use the flood technique to lift the cut-off legs (loads and loads of solder helps prevent board damage) then tidy up with braid and fit the new chip.

This can be done in about 15 minutes, you really need a microscope to ensure you don't damage anything. You may end up losing some pads from the board, but there are quite a few n/c's around the chip and it's usually these that go.

Hugo