Re: Atari Tempest issue

Ok, here is the latest.

I re-did the interconnect and did a continuity test and all is well. I
re-did the connector on the aux board (blade connector that attaches to
side of the PCB) with all new crimp on ends.

Voltages on Aux are: +22 is +23.6 -22 is -23.5 +5 is +5.06 -5 is -5.06
Voltages on main board are same +-.01
Voltages on Audio board are same +- .01
all voltages taken from the loop lugs

Here is a strange thing: if I disconnect the edge connector on the aux
board the game fires up in to a semi demo mode, full color but things seem
to be missing.
When connected it is same old thing, in test mode EPQM is up no response to
spinner. In normal mode spot killer activates.

I am thinking a new aux board may help but it seems so strange that
everything is out on the aux!

Is the 23.5 voltage the cause? If so how do I fix it?

Thank you all for the help so far. Hopefully soon I can try to avoid the
spikes again!

Thanks,

Elliot Braun
Smart Computer Care
SmartComputerCare.com
775-453-4349

On Tue, May 8, 2012 at 4:20 PM, Douglas Gauck <douglas@gauck.com> wrote:

> The 'F' should change when you spin the spinner. Does it?
>
> EQPM means bad EAROM, POKEY at B/C2, POKEY at C/D2, and Math Box. So I'd
> look at the interconnect cable and both sets of pins again, plus voltages
> on the Aux. PCB (+5, +22 and -22 volts)
>
> -Douglas
>
>
> On May 8, 2012, at 3:02 PM, Elliot Braun wrote:
>
> > Hello,
> >
> > I have owned this Atari Tempest system for about 7 years now. One day
> it just quit starting up. Power comes on but no game play.
> >
> > I have rebuilt the large board connector both ends (blade connector?),
> no love. I have replaced the big blue cap. nothing. I have checked power
> with a VOM and all looks well. I have reseated and resoldered interconnect
> cable.
> >
> > This screen appears upside down.
> >
> > I have attached the test mode screen. The re is no visible video in
> normal mode, just spot blocker led on monitor flashes.
> >
> > Player buttons light solid and board led is lit.
> >
> > Please help. I miss my tempest!
> >
> >
> > Thanks,
> >
> > Elliot
> >
> > <photo.JPG>
> >
> > <photo.JPG>
>
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Received on Thu May 10 16:03:17 2012