http://www.pinwiki.com/wiki/index.php?title=Pinball_2000_Repair#Light_Saber_on_SW:E1_Will_not_Light
Quoted from the Pinwiki:
"Below are common causes for the light saber not lighting.
The 12v fuse (F108) which powers the light saber has failed.
The neon light transformer (04-10947) had failed on the light saber. These transformers are getting harder and harder to source, but substitutes can be found.
The light saber is drive solenoid 41. Solenoids in the 40s are not driven by power transistors, but driven directly by the ULN2803. Drive 41 passes through pin 2 to pin 19 of U34 (74HCT574), and then through pins 1 to pin 18 of U35 (ULN2803). It then is connected to J111, but also connected to J110. Place the game in solenoid test mode, and have it repeat solenoid 41. Test this circuit with a logic probe to see if the signal is present or where it drops off. Start from J111, and work backwards."