On my Whitewater, the left lamp board is much brighter than the right board, so I metered them and found the left is 11.4V and the right is 5.43V. Chase lamp board is clean, no burns, caps look good. Possible the bridge rectifier failed or should I be looking at something else?
http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#WH2O_Chaser_Lamp_Board_.28A-15761.29