Re: Gravitar/Amplifone issue

Thanks guys!
I'll get some 6012's and try them out.

Mark, thanks for the offer and I really appreciate it,
but I will try these, then decide. I think shipping to
you there and back plus finding out who knows what is
wrong puts me in the ballpark of just buying a
tested/working board. I'm into these games big time
already and have not got a single out of the 6 working
yet. Asteroids deluxe only one close and I believe its
just a HV diode.. If you can test a bunch of these I
would perhaps be willing to pay. But with your 9000,
can you tell if say..I dunno... a 74ls157n is not
functioning somewhere?...like something totally minor.

Anyways... on the dern monitor... don't amplifones
have spot killers as well? I'm wondering why when I
turn this thing on hooked up with either of the three
boards I get the bright spot in the center... For
starters, shouldn't no signal give nothing on the
monitor? Shouldn't a bad, or no signal trip a spot
killer?

--- Mark Hooks <markhooks@earthlink.net> wrote:

> The TL082CPs are the most common failure I have seen
> followed by the
> AM6012s. Occasionally one of the output voltage
> regulators will die too such
> as the 7915Csor the 7815s. You can check the
> voltages at the + and - 15 volt
> test points.
>
> By the way, I found my Gravitar adapter for the PAT
> 9000. If you want me to
> hook your board up and see what I can find wrong
> just let me know.
>
> Mark.
> ----- Original Message -----
> From: "andre" <livnfree_can@yahoo.com>
> To: <vectorlist@vectorlist.org>
> Sent: Wednesday, March 28, 2007 2:09 PM
> Subject: Re: VECTOR: Gravitar/Amplifone issue
>
>
> > Followup:
> >
> > I went through almost every part of the amplifone
> this
> > morning and from what I can tell, everything is
> > working as it should.
> >
> > So I went back to the Gravitar board... now I must
> > have been thinking about the 2 Space Duels with
> X/Y
> > fluctuating because on this board neither does.
> The X
> > stays at a consistent voltage, while the Y slowly
> > climbs...I did not let it go to see how high it
> would
> > go but it doesn't seem to slow down, fluctuate, or
> > reverse direction. I replaced all 4 op-amps with
> no
> > change. All electrolytic caps are changed on the
> > board. I swapped in a new 6502 processor which did
> > nothing as well.
> >
> >
> >
> >
>
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Received on Wed Mar 28 18:40:29 2007