Re: Major Havoc/Tempest spinner problems

I am getting 5 volts to the opto board,I guess I could
try changing the 100 ohm resistor to a 150 ohm,I have
an extra tempest spinner to mess with.Any other
sugestions will be apreciated.Thanks.
                       Jerry.

--- Doug Jefferys <dougj@hwcn.org> wrote:
> On Mon, 25 Jun 2001, peter jones wrote:
> >
> > From: jerry madsen <jetskimod@yahoo.com>
> > >
> > > conversion board also,everything works accept
> the
> > > spinner(video,sound,buttons,coin mechs,all
> work)I know
> > > my spinner works because my tempest works
> fine,my
> > > conversion board is good also.A while back I
> plugged a
> > > different MH board in before i got this one and
> it did
> > > the same thing,everything worked accept the
> > > spinner.Give me some ideas.
> >
> > meter the voltage on the spinner pcb. make sure
> it's getting 5v and
> > ground. if thats o.k. then meter the quadrature
> outputs between the
> > spinner pcb and the gameboard.
>
> Sounds suspiciously like what happened when I hooked
> up an MH board
> to a Tempest spinner, except my spinner "worked
> fine" for the first
> 30 seconds, and then became less and less responsive
> over the next
> minute. The responsiveness decayed like voltage out
> of a capacitor.
> That's as far as I got when I abandonded trying to
> debug it about 4
> years ago.
>
> Some googling reveals some possibly-useful threads:
>
> ("Ensure +4.8V at the LETA chip or it'll get
> confused")
>
>
http://groups.google.com/groups?hl=en&safe=off&ic=1&th=c141d0f82a2e76fa,2&seekm=3231A229.477%40
>
> - Tempest doesn't use the LETA chip. It's possible
> that voltages that
> will "work" with Tempest won't "work" with MH.
>
> ("I fixed it by ensuring 5.0V at the encoder wheel")
>
>
http://groups.google.com/groups?hl=en&safe=off&ic=1&th=d3b63a50bc76e70f,1&seekm=437smo%24ihk%40nyx10.cs.du.edu#p
>
> ("Opto board on MH wheel has 150-ohm resistor,
> Tempest 100-ohm")
>
>
http://groups.google.com/groups?hl=en&safe=off&ic=1&th=d79c6abccdd2831a,2&seekm=989292917.705199%40goodnews.cos.agilent.com#p
>
> - Hmm, that could explain a thing or two.
>
> Although I never actually solved the problem, I did,
> however, eliminate
> the MH board as the source of the problem; the
> original seller tested it
> in his MH cabinet and it worked fine.
>
> That test, however, wouldn't have eliminated the
> three things listed
> above, specifically:
>
> - The wiring harness (I might be losing something in
> my wiring)
> - The optical board on the encoder (150 vs 100 ohm)
> - The voltage setting (Suppose I had a wonky cap in
> my A/R II board,
> and my game powered up with 5.0V, but over the
> next 30 seconds, it
> fizzled down to 4.8V. That would account for my
> "it slows down"
> symptoms and my "it slows down at the rate I'd
> expect if something
> involving a R/C circuit were at fault".
>
> I concluded that the problem was "somewhere other
> than the board", but
> never fixed it. It seems that the people who *have*
> fixed it, did so
> by fixing things I didn't look at it.
>
> Something tells me that me, my 'scope, and my
> multimeter are gonna
> get reacquainted with my MH board Real Soon Now.
>
> BTW, anyone got a source on Optek OBP2216 optos?
> (i.e. the "curved"
> kind that I have on my Tempest wheel? The "normal"
> ones won't fit
> in the PCB mounting holes used by the "curved"
> ones.)
>
> Later,
> Doug.
>
> --
> dougj |
> @ |
> hwcn.org |
>
>
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Received on Mon Jun 25 19:04:31 2001