you can get them off the bay, but they arent cheap.
Have you tried apple? They are normally very good with replacing handsets, even out of warranty.
If it's a coil or fuse you can always bridge it with solder.
no point buying a logic board, would be better to just get a second hand phone. Go to apple, see if they are generous. If not, have a go at the soldering - nothing to loose really. If it doesn't work, just send it away for recycling using the apple recycle program or cex and put the money towards a new handset.
Thanks, is that easy to do?
Thanks again.
You've got nothing to lose, I wouldn't go spending out on equipment if you don't already have access to it somewhere. I'd take that 'blue coil fuse' fault with a pinch of salt