It looks like you have some broken connections.
Inspect everywhere to see if you can locate any broken whires.
Also check for any disconnected connectors.
Your fans may be thermaly controlled and only spin if there is enough heat to dicipate. It's also possible that they are disconnected.
Make sure that there IS a signal comming in. Make sure that the cable is not damaged and properly connected at both ends.
Electro
May 2011