Archived from groups: rec.games.video.arcade.collecting (More info?)
One note about the above pinouts- If the sound doesn't work, try moving the
A2 - SPEAKER wire to A3 - 2 PLAYER - FIRE RIGHT. It's strange, but does
work.
A PDF of the schematics would be great to have - I haven't seen one
available. From what I remember, almost all the ICs in the dedicated
one-board MARS are in the same location as if you put the boards from a
Scramble end to end.
Archived from groups: rec.games.video.arcade.collecting (More info?)
isn't the hardware similar layout to a scramble pcb??
<vernimark@vernimark.com> wrote in message
news:1116335491.634042.135950@f14g2000cwb.googlegroups.com...
> Do you know where to find New Sinbad 7 or MARS manuals/schematics?
> I've to repair my NS7 without sound and all labels on ICs have been
> deleted...
>
> Thank you
>
> vernimark
>
Archived from groups: rec.games.video.arcade.collecting (More info?)
I verified.
Connector as I did was right but still I've no sound. Rotating the
potentiometer I can hear noise change but nothing else. I suppose that
the four ICs near the sound circuit are two AY8910 and two 8255. I
changed all of them but nothing... It is sure that sound doesn't exit
from a AY8910. Circuits from the AY8910 to the speaker works and it is
totally verified.
Facebook
Twitter
Instagram