I was recently looking to put together a high voltage DC power supply, after searching around online for the necessary components I realised that I would be better off trying to extract them from some redundant technology.
One quick trip to my second favourite store – Goodwill – and I had all the parts I needed. They came from an old 14″ color TV – no longer much use in the widescreen digital age.
This was quite a considerable saving. The only problem was – how to get them out…?
You need to be careful with flyback transformers – they are designed to store charge and some can hold it for a considerable time. Discharging through the chassis wire is the way to go – using a screwdriver and a jumper lead.
Finally you have to “neck” the CRT to release the vacuum.