Re: Tron lives!

First thing to check is that you have a good ground to the CP. (and to
the switches).

Kurt

EvilJim wrote:
> Programmed a new D6 (as well as Tim's freeplay hack for D2) and the
> game has come alive. Hooray...for the most part. =)
>
> Program seems to run fine, the freeplay addition is doing it's bit,
> what sounds I have heard are clear-ish.
> On to the next hurdle...no response out of the control panel at all.
> Since it was completely dead, I started by checking the switches for
> function, all seem to still be good. Next step was to look at the schem.
>
> It appears that the switches are hardware de-bounced, being grounded
> on activation of the switch. They don't appear to actually go to
> ground, as the setup looks something like a voltage divider when the
> switch is closed...but drops enough to activate the logic.
> So I poked around some more, voltage seems to be good up to the molex
> in the harness, but nothing once connected to the control panel. At
> this afternoon's reading, it was unclear how voltage actually got to
> the leaf switches, if it came from the SSIO or through the +5/+12 onto
> the encoder board.
>
> Am I looking at another short, somewhere in the CP? Is there a common
> failure on the SSIO pcb that leads to this behavior? I will have the
> boards out again tomorrow and start digging into this, but seeing Tron
> actually on the screen really feels great.
>
> Thanks for all the help so far, it looks like we may actually get this
> puppy up and running for sure. =)
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Received on Tue Nov 6 18:34:06 2007