So my Scared Stiff has suddenly developed a weird fault in that it's randomly sensing controller input (from the switch box and also the flippers). Anyone know what the culprit is? I've checked everything for shorts and am all out, I had a game yesterday and the flipper went on it's own. Never had this issue with any of my others.
Pinball info
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Control issues with Scared Stiff (WPC95)
- Thread starter Spadge
- Start date
D
Deleted member 2463
Any pattern? I'd start by reseating all the ribbon cables.
Sent from my iPhone using Tapatalk Pro
Sent from my iPhone using Tapatalk Pro
I did that - I replaced the dmd ribbon cable yesterday which was at fault (screen went off) - was amazed to find the ribbon cable was at fault, hadn't been near it, exchanged with MB, initially thought it would be a fuse.
Seems to be no pattern but happening with flipper buttons and menu buttons.
Seems to be no pattern but happening with flipper buttons and menu buttons.
Changed the ribbon cable with a few different ones, the game plays fine with no random operator menu or flipper button inputs.
However, the operator buttons don't work at all, any of them. The game plays totally fine, flipper buttons all ok, etc.
Feels like something pretty stupid I've missed or overlooked, I'll have another look later.
However, the operator buttons don't work at all, any of them. The game plays totally fine, flipper buttons all ok, etc.
Feels like something pretty stupid I've missed or overlooked, I'll have another look later.
Yeah I did, seems ok, no loose/hanging ground anywhere.
As usual, I'm perplexed by;
a) No problems
b) Then intermittent switches closing (operator switches and flipper buttons now and then)
c) Remove and replace ribbon cable
d) Now no response from the operator buttons - but game works and plays fine.
As usual, I'm perplexed by;
a) No problems
b) Then intermittent switches closing (operator switches and flipper buttons now and then)
c) Remove and replace ribbon cable
d) Now no response from the operator buttons - but game works and plays fine.
Hi,
The four control buttons, and the four coin inputs, are the 'D' (direct) switches, and probably have their own connector on the Cpu board - they did on earlier Wpc boards. Each of the lines is switched to ground when the button/coin switch is 'closed'.
The four control buttons, and the four coin inputs, are the 'D' (direct) switches, and probably have their own connector on the Cpu board - they did on earlier Wpc boards. Each of the lines is switched to ground when the button/coin switch is 'closed'.
Thanks, according to the manual they're on J205, the cable seems fine I just have to check for continuity. I just don't get how they all could go bad. I'm assuming it's a chip controller gone awry.
One of the wires in that connector is the ground connection for them, so you could try taking off the connector and carefully linking each input pin in turn to the ground pin. I'd say put the machine into switch test first, but in this case that isn't possible.
What's the area around the batteries looking like?
It's one of thew few machines that I don't have an NVRAM in there, but they were replaced not so long back and as far as I know there's not been a leak.
Best go and have a look or post a photo here for others to scrutinise!
D
Deleted member 2463
The same thought had gone through my mind.
Sent from my iPhone using Tapatalk Pro
Sent from my iPhone using Tapatalk Pro
FIXED!
Well, sort of...
I decided to swap over the MPU boards in SS and MB. Removed the boards, 2 IC's etc.
Put them all back together to see if the fault occured on MB, but lo and behold, both are working fine, both operator buttons fine.
I can assume they were somehow grounded on my SS but movement in the back box has settled it down again.
I like the result of this, but I'd have liked to have knom where the issue was!
Well, sort of...
I decided to swap over the MPU boards in SS and MB. Removed the boards, 2 IC's etc.
Put them all back together to see if the fault occured on MB, but lo and behold, both are working fine, both operator buttons fine.
I can assume they were somehow grounded on my SS but movement in the back box has settled it down again.
I like the result of this, but I'd have liked to have knom where the issue was!
