quick manual | algorithms | dx max(4): options, pictures, destroy and repair
How I destroyed and repaired my DX7
When you remove a board from the motherboard, do it very carefully.
I wasn't, so the pins from the board to the socket got bent. When I tried to bend them back into shape, they broke off.
So I had to repair that with the smallest wires I could find.
It was horror and it took a lot of time and sweat. Not recommended.