Archived from groups: rec.games.pinball (
More info?)
Interesting... I have never heard of the symptoms you are describing, so as
far as I know there isn't any established procedure to advise you with. Try
this. Do a full factory reset and let the auto burn-in run for a while. Then
power off and power on again.
1) When you checked your switches in the switch edges test... Did you get
any phantom closures (e.g you press one switch and a few of them register).
If, no move on. If yes, which ones?
2) Correct number of balls in the game? 6 of them I believe (running from
memory).
3) Check your ball through too.
4) Is there a 10 opto board underneath the playfield? Check that too.
5) I can cup the ball in a flipper and hold then the game will randomly
> score points on its own with no movement or contact from me. ---> WHAT is
it scoring? What does the game "think" you're hitting? Check those places.
6) The more I read about it, the more it seems you have problem with U20 and
other LM chips wither on CPU board and/or an opto board under the playfield.
Changing game ROM at U6 WILL NOT sure that problem.
But, then again, you say they all work perfectly in test modes so my theory
with U20 doesn't hold much water there. However, you do have to be
absolutely sure there are no multiple switch closures in the switch matrix
test.
But, still coils randomly firing, it still seems like switches associated
with those coils are firing when they are not supposed to, so I'd stick with
thinking it's the switch matrix problem.
7) See this. I don't remember the switch matrix for Shadow, I sold the game
a while back. I bet you a dollar that the TILT and extra ball switch are
either on the same row or the same column as the optos you are having
problems with.
The desperate move (if you have the ASIC removal tool) is to reseat the ASIC
chip, sometimes it helps, sometimes it's dumb, redundant and doesn't do
anything. Don't try to remove it with a screwdriver.
Now, get the sheet with the switch matrix out and start testing. It's sort
of hard for me to "visualize" your problems and advise by typing, it'd be
much easier to be present, so I am sorry if I am a bit off here.
It seems you have to be really methodical here and do problem solving
deducting and narrowing down the problem till you nail it. Switch matrix
havoc, especially hunting it under the playfield is my least favorite task
in refurbishing, and it could be really extremely frustrating. I even like
rebuilding pop bumpers better than that.
Post back if anything changes or improves.
Adi
www.txpinball.com
"Greg Shanes" <gshanes@verizon.net> wrote in message
news:b1dIe.12657$Bx5.4701@trnddc09...
> Thanks. I posted this on Sunday with not much success.
>
> Well I finally got my Shadow and I love the game!! HOWEVER......
>
> When I first got the Inner Sanctum magnet was inconsistent. Sometimes it
> would grab the ball and vanish it and sometimes it wouldn't. So after
> searching of rgp I tried multiple things to fix it and got it working
quite
> well (leveled it perfectly and aligned it to 6.5 degrees and made some
minor
> adjustments to the switch).
>
> NOW all the sudden the game has gone completely schizo ....
>
> 1) Whenever you shoot the ball up the right ramp it triggers the ball
lock
> so it basically gives you credit for locking a ball when you didn't
>
> **the above was the only problem for several hours of play last night
until
> the last 5-10 mins and then all the below started to occur and has
continued
> into today. Everything else was playing great except this and I played
for
> at least 3 hours last night.
>
> 2) Coils just randomly start going off (slings, divertors, sanctum ball
> lock mech, ejector from the right side scoop saucer etc.)
>
> 3) I can cup the ball in a flipper and hold then the game will randomly
> score points on its own with no movement or contact from me.
>
> 4) The game will randomly tilt all on its own.
>
> 5) The game will launch multiple balls from shooter, sometimes off the
> start and sometimes just at random during play.
>
> This last problem has been a problem since I got it.
>
> 6) The extra ball button does not work (ie won't let you buy in).
However
> if you test it in switch tests it works perfectly. I have checked all
> adjustments and have everything turned on thats supposed to be on to make
it
> work.
>
>
> **I should mention I have checked all switches and coils in test mode and
> EVERYTHING works perfectly. Also I have checked all wires and connections
> and everything seems fine. There are no busted/burnt connectors and no
> problems to speak of on any of the boards. I do know that oned of the Tip
> 102s on the main board was replaced before I got it.
>
> I have used both LA-5 and LX6 roms and these problems are still present.
>
> Looking for any help I can get as I have already invested a lot of time in
> attempting to diganose whats wrong and fix it -- with no luck.
>
> Thanks in advance for any help.
>
> Greg
>
>
>
> <adi@txpinball.com> wrote in message
> news:2jcIe.5534$6D5.1340@newssvr29.news.prodigy.net...
> > Nope, you can't. Different board generations, not backwards compatible.
> Even
> > if you do find another WPC-S board, it has to be either from another
> Shadow,
> > or you need to swap the security (hence the S in "WPC-S") chip with it
> too,
> > along with the game ROM U6 chip. What kind of issues are you having,
maybe
> > we can help?
> >
> > Adi
> > www.txpinball.com
> >
> >
> > "Greg S" <gshanes@NOSPAMcomcast.net> wrote in message
> > news:uZ9Ie.39615$W%5.34787@trnddc05...
> > > I think I have CPU issues with my Shadow (ie lots of strange goings
on).
> > > Can I swap in my Monster Bash CPU board into my Shadow (swapping roms
of
> > > course) to see if this fixes some of my problems OR is a WPC-95 CPU
> board
> > > different from a WPC-S CPU Board.
> > >
> > > LMK
> > >
> > > Thanks
> > >
> > > Greg
> > >
> > >
> >
>
>
yfIe.3084$iT2.2735@newssvr25.news.prodigy.net...
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