You are talking about many confusing things.......White screen and errors but not providing any images......
Where did you get replacement board from?
Have they pre-loaded any information on it?
Have you loaded any information on it?
Why is the Robot Arm not connected?
What happens when you connect Robot Arm, and do initialization - screenshots please of screens and errors.?
You have backup already, you posted it on the forum, that needs loading into the Controller.
- Remember procedures I gave you, have you read them?