...It probably hasn't been poweredup for over two weeks now.
...The test report suggest some switches need checking? 

I believe some machines will report switches need checking if they haven't been triggered in a while. So I would run a ball or manually trigger all switches, then turn the machine off and back on again, and see if it is still reporting switch checking issues.

You should also be able to put the machine into maintenance mode via switches on the coin door, and test all switches are operating correctly using one of the test modes.

As for flippers, check connectors between main board and flipper board as stated above.

You can check at flipper coils for voltage on flipper button press, you should get a voltage spike of around 60V across the main coil terminals (if you check the number of the coil, you can find out what voltage it's meant to be fired at).