Dependant upon the date code you may have to carry out the following
Fit the eeprom to the module and disconnect the small fourway orange plug.
Switch on the machine for thirty seconds then switch off.
Remove eeprom from board and refit orange wired plug to edge connector on module.
Fire up the machine and hey presto it works.
(this week anyway)
Yup certain datecodes cant remeber which,you just use the eeprom to programme the power module(rather like this new smartcard thingy will work)
It threw me first time i came across it and it can be a pig to do but works fine once up and running.