Central computer display goes off

[lunatic]

Our central computer works fine with all functions. On a recent trip I noticed that after driving on a rough road, the display had gone off. I pressed the big button and it came back on with all the functions working as they had before. This has happened a couple of times now. Maybe there is a loose wire into the back of the control panel? Does this make sense, or is there another problem?

I think I know how to access the back of the control panel - through the upstairs bed and a plywood cover. I need help with 2 things please:

1. Does anyone have a photo of the back of the central control panel that shows which of the cables are attached where?
2. Is the best way to solve this issue to access the back of the control panel from the upper bed? Or is it best to pull the computer out from the cab, push the wires in and then put it back?

I am looking for which wire provides power to the display.

Thank you!

Ian