Hello to all.

So, i have an iPod touch 3G updated to the latest iOS 4.whatever it is.

So, i had it charging on an iPod dock/clock and this morning, i noticed it failed to start up by waking it or turning on by pressing the lock button.

I plugged it into the apple wall adapter to 5v usb, and i noticed a large amount of heat from the lower corner after a couple minutes of charging, immediately after noticing this, i UNPLUGGED.

This was a FULLY functioning iPod the day before, and im curious to which part should be replaced, as i BELIEVE it was an overcharge of electricity to the ipod damaging the internal circuit.

I do have parts from a 2G ipod touch, not sure if it would be any benefit to USE these parts in a repair, but i COULD try if it is advised. You should be posting on the Apple support forums (at their site) - or even better, contact Apple support directly.

http://www.apple.com/support/ipodtouch/i am way past warranty, so im not sure if that will help.
You should speak with people familiar with the product or post on their dedicated forum.