Whirlwind
Williams, 1990You're currently viewing posts by Pinsider Schwaggs.
Click here to go back to viewing the entire thread.
If you remove ribbon 2 - you disconnect the aux and sound boards from the CPU (signal lost) - never going to work in this case.
If you remove ribbon 1 - the aux board is still connected - sound board disconnected. Solenoids should work as they are still connected. Could be some noise stopping it from working.
Try removing the ribbon cables and reversing their direction. Pay attention to the red tracer and keep it on pin 1 of both boards.
It really feels like a problem with the sound overlay board or the ribbon cables.
I would install a new set of ribbon cables.
If that does not fix it, I would suspect the sound overlay board addressing gates first (U2 74LS32) then the latch (U1 74LS374).
I'm really at a loss as to why installing LEDs would cause this.
Quoted from bbddpp:Turns out that component above the left battery, even though I cleaned it off, took some damage from the battery leakage, and that component has something to do with the sound which explains why my machine was playing the wrong or weird sounds. Hopefully getting that replaced will also fix the spinning disc issue. I will report back once I find someone local to work on the CPU board. Beyond my comfort level!
I think you are on the right track. SR3 (the corroded resistor/capacitor array) is the pull-up lines for the data bus on J21. The corrosion on those super fine traces there and under the battery pack need to be remediated. While you are having the board worked on, have an NVRAM installed so you can do away with the batteries forever.
You're currently viewing posts by Pinsider Schwaggs.
Click here to go back to viewing the entire thread.
Wanna join the discussion? Please sign in to reply to this topic.
Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
This page was printed from https://pinside.com/pinball/forum/topic/whirlwind-pinball-missing-trough-3-and-other-weirdness?tu=Schwaggs and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.
Greenwood, IN