cr0sh, I appreciate the warning... for this project I think I'm just going to remove the LCD altogether. I don't need it for my project, I just need the scale's precise measurements. I'll keep in mind that the signals are probably AC though. My only tool is a cheap multimeter though and there aren't any test points for the traces from the blob to the LCD. Can I just stick a multimeter probe on the traces and one on T2 (GND)?
My plan right now is to cut off the LCD altogether and wire the 16 traces that had originally been going to the LCD to my arduino instead. My biggest issue right now is that I don't know how to solder something to those 1/2 millimeter thin traces that are so close to each other. If anyone can shed any light on that I think that's the route I'd like to take.