I've tried to capture the broken filament as well as the discolouration created by the filament burnout.
They are crops of the originals, with Sharpening using Picasa 3.
Fuji FinePix SL300
Broken filament (2) by taffopol, on Flickr
Picture Mode - Auto
ƒ/3.1
4.3 mm
1/50
ISO 200
Broken filament (1) by taffopol, on Flickr
Picture Mode - Auto
ƒ/3.1
4.3 mm
1/42
ISO 200