hi i used a vishay oled display and installed it last month.
you need to remove screws, then the pins at the header as well as two further connections for anode/cathode and then it lifts away.
i got myself another pin header to solder on to the new OLED board, then on to the EMU EIIIXP Panel board as i knew it would be a cleaner job that way. I had to snip the pins to shorter lengths.
I also removed the inverter from the main board.
Let me know if you need any assistance
Thanks a lot for your help ! that is very helpful. Fact is I ordered another brand of OLED (Newhaven) so I would need to know if this is the same way of proceeding?