Battery replacement of my son's 2011 iPad 1. Once more invaluable help from ifixit as with an earlier G5 Dual 2.5 and also an iMac 27.
After the battery replacement some non responsive areas on the touch screen. Review revealed I had not relocked the digizer cable and once I did this with yet more replacement clips applied then a return to perfect function. Thanks for the invaluable help. Steve Henderson, Perth, Australia.