I was playing a rather fast game and suddenly the GIs went out. All three playfields. Fuse was blown. I don't have any 7.5s on hand, but I had some 8s. So checked under the main playfield and the lower one and didn't see any obvious shorts so put in a different fuse and it was good until game play started.
The display and testing was sort of wonky after that, with the display sort of flashing. And it wouldn't come out of test mode when I hit 'done'. Is that because it had a blown fuse? (F6 is the GI)
Are there other things that connect to the GI circuit I should check?
I plan on taking off the upper playfield to check under that for shorts tomorrow.