If your Xbox has a Samsung SDG-605 DVD drive that refuses to eject, but occasionally opens when you tap the console, there are a few mechanical possibilities.
In this particular drive I was investigating whether the spindle clamp magnet was holding the mechanism together too strongly.
That can contribute to this symptom, but it is not the only possibility.
The eject belt and tray mechanism are also common places to start when an Xbox DVD tray refuses to open.
So the modification shown in this video is what worked for this drive and this symptom.
It should not be treated as the universal fix for every stuck Samsung tray.
I’ll come back to DVD-drive repairs again shortly because I have another late Xbox with similar behaviour.