Hi guys, device stopped charging so took a look inside and found a component that connects to the 5v line of the input socket burnt out. Have removed the remains for clarity, if you look at the pic it connects the last pin on the socket to the large-ish (diode ?) to the right, you can see the burn mark between them. Can anybody identify this part for me. The tomtom still works Ok on battery power (charged it up on another tomtom) so would like to repair if possible.