Ok, so I am trying to troubleshoot a Gottlieb Roller Disco that is blowing the GI lighting fuse as soon as it is turned on. The fuse just started blowing a couple weeks ago, and as far as I know, there were no mods done that could've caused the issue.

I have checked the wiring under the playfield, and so far, I have not found anything that looks shorted. I have not checked the backbox, but that is my next step. I did do some research, and found that someone reported the wiring around the pop bumpers as causing his issue, but mine looks fine.

I guess, what I am asking, is there anything I should be doing other than visually checking the wiring? Any tests I can do with the meter that might lead me to the short?