Re: Tempest problem.

heh, those kinds of faults where you can kickstart a stuck node are very rare, i've done maybe 3 of them in 10 years, and only one of them later failed... one was on an asteroids, one was on a battlezone, and the other was on a more modern game i forget what it was, but it was that one i had to revisit and replace the offending IC.

So i'd say you have a 33% chance of it re-appearing, but at least yuou know exactly where to look if it does re-appear.

Andrew Welburn
www.andys-arcade.com
  ----- Original Message -----
  From: Kevin Moore
  To: vectorlist@vectorlist.org
  Sent: Tuesday, November 17, 2009 1:37 PM
  Subject: Re: VECTOR: Tempest problem.

  Yeah, I just hit it with +5v and it started toggling. The problem hasn't come back even through power cycles. It's been running just fine for the past 12+ hours. Which seems odd to me, so I'm going to keep an eye on it for a while longer.

  Kevin

  On Tue, Nov 17, 2009 at 7:27 AM, <kstillinger@sc.rr.com> wrote:

    Hey Kevin-

     What exactly do you mean when you say you 'toggled' the pin?
     Did you force it high with a momentary short to 5V? If so, did it start making the appropriate transitions afterwards? Does the problem re-appear after power cycling?

     Just curious and looking for more info.

     Kerry

    ---- Kevin Moore <talon.k@gmail.com> wrote:
> Thanks Andrew. I have the alt circuit with the MC3410. Pin 4 was stuck low.
> Toggled it, and the problem went away. I'm sure the problem will come back,
> When it does, I'll have to check the proceeding circuit to see if the
> problem is with the 3410, or somewhere before. But at least I know where the
> problem lies.
>
> Thanks very much for pointing me in the right direction.
>
> Kevin
>

    ---------------------------------------------------------------------------
    ** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
    ** Please direct other questions, comments, or problems to chris@westnet.com

---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Tue Nov 17 08:48:39 2009