HP65 display issue

[GreyUser]

The use of heatsinks is a fools errand. They don’t work for the application being discussed. In fact, they’re a general waste of time.

A integrated vacuum pump desoldering tool is the only effective way to extract the displays. There is more to component removal than just buying the appropriate tool, technique is just as important. While it is very dated, this video provides an excellent overview of the process as it applies to older HP through-hole boards.

https://m.youtube.com/watch?v=e8KRPFOD1RE