I use my PNC Bank ATM card at a Fifth Third Bank

SOURCE: SUMMIT PRODUCTS YOUniverse Deluxe ATM Bank Machine

We had the same issue -- the name could be reset, but not the pin could not.

Finally, I realzed that when it is reset by using the reset button or the batteries, the PIN is reset to the factory default of 1234. Don't try using your old pin at this point -- enter 1234 as the pin.

Once you have the bank working again, theoretically you can reset your pin to whatever you like by hitting enter twice. I say theoretically because we're sticking with the factory default for now.

Hope this helps.