BIG board problems

[teddypan]

GUYS!! I have a big board problem. It simply wont turn on, and i have a fresh battery in it. What could be the problem? Im not even getting the light to turn on when i flick th swtich.

[DriedGeckoEgg]

check and see if the wires are soldered on to the 9v adapter and the board, my wire came off the adapter, and i had to solder it back on.