On my Space Invaders all the backbox lights work, but only 6/8 of the lights strobe. The lights that are constantly on are in the left lower bottom and bottom left. Each of the set of lights that do not work are in a string of 4. So 8 lights total do not strobe but stay on all the time. Do you think its U1 on the aux lamp driver board?
I also get no creature lights at all.
Any help is very much appreciated.