Quoted from DEN:
Yes you are right, i can replace all the caps, i was hoping for a more specific answer, maby we have a data east wizard in here, that can tell me more exact, where the problem is
The behavior you describe suggests the caps on the power board are failing. The filter cap at the bottom would likely not be failed. Before you replace the caps remove the power board and thoroughly inspect for cracked solder joints, and inspect the caps for signs of failure like bulging or leaking. The 5v filter caps are the most likely culprit, if one of these failed the other three could still allow the game to boot.