Ahoy hoy! If anyone can proffer any advice it would surely be much appreciated This is what happens when I turn my 4S on: And when I plug it in, the presence of a charger is acknowledged: However, no matter how long I leave it plugged in, it will not spring to life - it sits on the charging screen like this indefinitely. I have tried alternate cables, chargers, using USB ports, DFU mode restore, all to no avail. I took it to the apple shop, and lo and behold, it powered up for the lady in there first time! But that only lasted a moment or two before it was back to this. Its out of warranty, and was a £170 swap out at the apple store. Fair enough, but I'm no stranger to the guts of these - I'd like some suggestions please as regards what I should try replacing to bring this sucker back to life. Thank you all!