Fixing Pioneer BDP-450 Blu-ray player with disc read error and sticking tray.

My pioneer BDP-450 Blu-ray player had been messing about for quite a while with a sticking cd tray and intermittent disc read errors and then one day just wouldn’t load any discs. I decided to have a go at fixing it with no experience, learning as I went, with a view that if I fixed it, it was a bonus as it was broken anyway! I made a few errors along the way but kept them in the edit so that you can learn from my mistakes.