You have bad data, so let's start with that first. You don't measure AC against ground. You measure one leg of the socket against the other.
The lower playfield on WW (2 bulbs under each sling, and 3 bulbs under each lane divider, 10 on the lower PF) is the yellow GI string. You want to check voltage across pins 3 and 9 of J120 and J121. Measuring the voltage against ground won't give you good results.
The same GI string has bulbs on both sides of the raft in the translite. So, if the string on the translite works, and the string on the playfield doesn't, you either have a broken wire or bad connector.
It's not uncommon to damage traces when rebuilding GI strings. I'm not intending to doubt your abilities - but if you didn't know how to check AC voltages properly, you may not be experienced in this area, so I don't want to assume anything.
IMO, any GI repair needs to have the procedure for continuity tests in this link followed both before and after the repair. The times I've ignored it, the driver board has almost always had to come out and be repaired again, because a trace that *looked* good was not good!
http://www.pinrepair.com/wpc/index1.htm#connectScroll down to the section titled
'Again Verify J115 Connector Continuity'Test the following paths for continuity.
* J115 pin 1 to ground. Note if this connection is broken, wacky GI dimming can occur.
* J115 pin 2 to fuse F106 (lower left) to J120/J121 pin 11, to J119 pin 1.
* J115 pin 3 to fuse F110 (lower right) to J120/J121 pin 7.
* J115 pin 4 to fuse F109 (upper right) to J120/J121 pin 8.
* J115 pin 5 to fuse F107 (middle left) to J120/J121 pin 10.
* J115 pin 6 to fuse F108 (upper left) to J120/J121 pin 9.
* J115 pin 7 to Q10 top leg (triac lower rt). Q10 middle leg to J120/J121 pin2.
* J115 pin 8 to Q18 bottom leg (triac upper rt). Q18 middle leg to J120/J121 pin1.
* J115 pin 9 - key
* J115 pin 10 to Q16 top leg (triac lower mid). Q16 middle leg to J120/J121 pin5.
* J115 pin 11 to Q14 top leg (triac upper mid). Q14 middle leg to J120/J121 pin3.
* J115 pin 12 to Q12 top leg (triac left). Q12 middle leg to J120/J121 pin6, to J119 pin3.
