Quoted from koji:Update.. spent 30 minutes trying to reproduce this with glass off, no luck. If it is a thing, it is related to some sequence or amount of other switch hits..
hi koji,
I might be able to help you out. try this:
- with the glass removed, start a new game, select light lock
- then directly lock a second and a third ball (it really helps here to have 4 balls in the left VUK)
- now do the shooting part and don't let a ball drain, doesn't matter if you hit or miss..
- once the mb starts, you should start grabbing the balls directly from the left flipper and put them into the the neutral zone as fast as you can.
- do this 20 times.
- then stop and wait for 4 balls from the left VUK and the other two should come out from the cannons. works here every time.
it also works with the center shot, but not that reliably because there is this "Jackpot!" sound that most of the time interrupts the VUK.... that's why it bothering me: if you get good at hitting the center shot, you might have 10 or something consecutive hits, and that normally triggers 4, or sometimes even 6 balls.... what helps is saving one ball on the right flipper btw.. but I don't really like that as solution =(....
this is actually driving me crazy since Christmas... I've checked anything! new optos installed everywhere, changed MPU with ASIC and ROM, new ribbon cables, new 16-opto board, swapped Eddy sensors, new switches for the cannons, tried other (newer) VUKs, installed a gate at the VUK entry, shims for the left VUK, shims for the ball trough.. new opto boards for the through.... almost anything... an "endoscope" to check whats going on inside the VUK... everything works perfectly... still having this problem....
and as you said, nothing on the internet about it... (checked German and French forums too)... nothing.... so I thought it must be something weird with my STTNG.
What I (currently) think is going on: if the left VUK kicks a ball out, the other balls inside are being pushed back. when they are still moving and you feed other balls into the subway, the ball count somehow gets messed up...
Would be really interesting if more people have the same problem... or if it's just a mechanical or electrical defect we are having here.. currently I think it is a bug. maybe lowing the VUK firing rate would help: so that you never hit the center target in the moment it VUK kicks out a ball...
ps. not sure, but I think this is actually my first post here!! I've been here reading along for almost a year now.... thanks to all for all the great info!! and thanks to pin_guy for all his cool pics and explanations! really miss him.. hope he is doing well!
pps. and sorry for my English =)