Fruit Machine Chat

Hi guys, just bought my first fruit machine. Heard bad stories about this particular model but I have loved it ever since I played it in University. I have bought one that for some strange reason has a lot of lights that aren't working, roughly about 50. The bloke I bought it off was very helpful and explained that the bulbs are all in tact and he believes it to be a wiring fault. He had already changed one of the boards believing that would be at fault but it hasn't helped. Anyone got any ideas what could be causing it?

I will try and upload a pic of which lights aren't working. Also can anyone tell me how to fill the hopper up?