Quoted from callmedoor:
lynnindenver What is happening is sometimes when I power the game on the rollover switches just don't work. I do the Sys 1 "test" where you press a switch and see a flicker in the displays and when I first power the game on sometimes they work and sometimes they don't. The switches on the rollovers are solid as far as I can tell and are not shorting the line.
When I start a game and I trigger the pops the rollovers generally work for the time that the game is on. It's never just one rollover switch that doesn't work, it's all of them.
The only thing I have found so far is related to the pops and then I noticed that the switches for them were broken. I honestly don't know if this could fix the problem, but either way those switches need replacing.
So, for rollovers, is it the Star rollovers (the three round ones in the open area of the playfield), or the rollover lanes, either the skill lanes up near the top, or the inlane/outlanes, or all of the rollovers mentioned? It's kind of odd that the switches sometimes don't work until the pops fire. Here's the lay of the switch matrix for all the rollovers I mentioned, note that some switches are wired in parallel and hence the MPU sees all of them as a single switch:
Both Outlanes: Column 1, Row 0.
Inlane: Column 1, Row 1
Star Rollovers: Column 1, Row 2
Skill Rollover 1: Column 2, Row 0
Skill Rollover 2: Column 2, Row 1
Skill Rollover 3: Column 2, Row 2
Skill Rollover 4: Column 2, Row 3
Also, do the 10 point rubber switches suffer the same as the rollovers, if it's the lower lanes and stars? Those are ALSO in the column alongside Outlanes, Inlanes and Stars, on Row 3.
The Pop Bumpers have two switches between the three of them: Column 4, Row 0 for the front one, Column 4, Row 3 for the back pair. The kickout holes (where you reset the drops if they're all down) are on Column 4 as well (Row 1 for lower, Row 2 for upper), and you might check to see if activating one of those has the same effect as hitting a pop in terms of shaking the rollover switches out of their stupor.