RE: MH and Tempest spinner not compatable?

Not a good idea to reduce the resistor size and the current through the
Infra-Red LED will increase by a substantial amount and it shall croak a
lot sooner. That is if the resistor is the load resistor for the LED (as I
suspect).

If the spinner is not working with MH, but does in Tempest, then you need
to check if you have the power getting to the spinner on the MH... If power
is present, then check outputs of the spinner with either a voltmeter (turn
VERY slowly) or logic probe to make sure the state is changing...

John :-#)#

At 02:03 PM 14/03/2003 -0600, Joe wrote:

>Thanks... I did notice now that the MH board has a 150 ohm resistor from
>ground. The Tempest has a 100. If I change the resistance, I would
>assume that it'd work on MH. But, will it still work in the
>Tempest...... I guess I'll find out..
>
>-----Original Message-----
>From: Louis Srianomai [mailto:louisurfer@yahoo.com]
>Sent: Friday, March 14, 2003 1:13 PM
>To: vectorlist@synthcom.com
>Subject: Re: VECTOR: MH and Tempest spinner not compatable?
>
>Joe,
>
>I think some of the older opto boards work and some don't with MH.
>
>If I recall, the latest one you can buy at happ rev F. works. I think
>Mark
>used these for his repro roller.
>
>Of the 10 or so tempest CP's I've seen only about half worked with MH.
>
>L.
>
>
>--- Joe <joe@joesarcade.com> wrote:
> >
> > Are the MH and Tempest spinners not compatible I did see in the
>Tempest
> > -> MH conversion that Atari included a new spinner pcb, or is that
> > wrong? If so, does anyone have schematics of the MH spinner PCB?
> >
> > Please help if you can...
> >
> > Thanks,
> > JB
> >
> >
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Received on Sat Mar 15 11:51:48 2003