got a SimpsonsPP whitestar and some odd stuff,
-normal game play the two bumper stand ups and the kwiki mart will cause coils to fire and tilt
+this is because when hit they light up the row
so rows 1,2,3 are bad when those switches are hit (it lights all the switches in the row)
if I disconnect the playfield and test the switches by jumper there is no issues but the coils are twitchy they "sort of fire"
I dont have a spare whitestar at the moment.. and =assume= the 74HCxx chips took a hit from coil voltage, before I take it down just wanted to post for ideas