I turned off the power, opened the white box, internal alarm rang, i disconnected the battery then removed the NVM chip.
This chip has 4 pins either side. On one side 1 was bent over, on the other 3 were bent over. Fairly sure i did not bend them taking it off - came off straight. Would it be normal to have pins bent for functios not used?
Replaced NVM and plugged in battery. internal alarm did not ring - turned back on power. typing at keypad just sounds beep - whatever key..
Peter Debrun, November 2010