Re: Simple cinematronics question

From: Kurt Mahan <kmahan_at_xmission.com>
Date: Sun Apr 21 2002 - 13:57:12 EDT

"Got Ground?" (sorry, the milk commercial popped into my head as I was
writing this..)

Stick a scope down onto the input to the decode chip (no schematics in
front of me so I don't remember which) and see if you see a solid
+5/GND transition when you press a button.

Kurt

> A few months ago a bought a Rip Off board and control panel from Ebay.
> I modified the control panel slightly so that it could rest on top of my
> Star Castle control panel. I want to be able to swap the Star Castle
> board every once in a while in order to play Rip Off. Rip Off actually
> works will with the Star Castle gel overlay.
>
> Anyway, I needed to lengthen the ribbon cable from the Rip Off CP to the
> CPU board because it wouldn't reach far enough. So I bought a normal 26
> pin ribbon cable with a simple 26 pin adapter.
>
> For some reason the controls won't do anything. I've checked the
> continuity from one end of the cable to the other and their fine. I'm
> even reading +5v volts on the control panel circuit board coming from
> the CPU. I even flipped the ribbon cable around to make sure it isn't
> backwards.
>
> Any guesses on why doubling the length of the control panel ribbon cable
> would be a problem? Too much resistance maybe?
>
> Matt
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Received on Sun Apr 21 11:05:33 2002

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