No problems. The red buttons are test buttons. You can push these are the board should perfrom a test. Is there any other boards in the backbox which have not been photographed yet? There should be another board for the power supply.
The small board by itself is a reset/watchdog timer board. If the game was to lock up on site, it could potential burnt out a coil. If the reset board does not detect the CPU is running(and locked up) it will reset the entire game.

You will need a multimeter to check the 5v power supply.

ok so i can push that button and what happens on test? on my spacehawks machine it has test switch o nthe coin door that i can cycle through to test lights sound coils and what not, is this just where gtb have their test switch o nthe board its self? is that what those switches do?
there is one other i didnt take photo of, to me i thought it might have been an amplifier? for the speakers? as its just a heat sink with wires to it, and sits beside that first board pictured above.
the game is playing fine, other than just certain sounds not playing, it isnt locking up or anything.
i have no problem with testing 5v other than what part of the board i get the 5v reading at,lol
hopefully connectors are a problem on the sound board i at least know how to do that, cheers