In reply to pneame:
Yes, the home button. You've every right to accuse me of being faint hearted...
It's an iPad 2. The only thing that worries me (flushed with success in dismantling and reassembling my Lumix camera to remove dust from the sensor... ) is that the repair seems to rely on the possession of a metal spludger...?!
Anyway, I've now found that the home button can be bypassed by a five fingered pinch action to get the home screen.
Strangely though, the rotation/lock rotation switch has now also died and the screen is locked with the home button on the right. Not that that is a problem. Could this be built-in obsolescence at its absolute perfection?
As you can probably tell, it's raining...