This may be useful to some when identifying their ecu or ordering new parts. The first pic is a breakdown of the various part numbers on the ECU outer case. The remaining pictures are a stab at the various components on the board.

A non displaying or partial displaying LCD on the rev gauge can be simply fixed by cleaning the contact points behind the screen. Disassembly isn’t too difficult, see images below. Once taken apart an alcohol wipe on the screen contact points is all it took to get mine displaying again. Its worth testing before reassembly!