[Coco] RGB cable for Samsung SyncMaster 711mp

[Ken H.]

Just checked again and SCART pin 20 is connected to the 74ls02 pin 10 which
is the CSYNC.
If your diagnosis the composite sync issues I'll do more testing there.  I
was worried that this monitor may not support 15khz after all.


On Thu, Apr 10, 2014 at 11:31 PM, Luis Antoniosi (CoCoDemus) <
retrocanada76 at gmail.com> wrote:

> In your video you are clearly missing composite sync. I bet you wired
> it to the wrong pin.
>
>
> On Thu, Apr 10, 2014 at 4:22 PM, Ken H. <dragon.atv at gmail.com> wrote:
> > I have built a Coco3 RGB to SCART cable for my Samsung SyncMaster 711mp
> > monitor but the image is jumping around.  You can see it in this short
> > video here: http://youtu.be/5Jm2T_HyK5E
> > What's wrong? Is the Sync signal wrong or perhaps this monitor doesn't
> > support 15khz RGB? (although I believe it should)
> > I have used a 74ls02 to create the composite sync.  Scart Pin 8 has 12
> volt
> > and pin 16 measures about 5v.
> > Can you tell what's the problem based on how this image looks?
> > thanks
> > Ken
> >
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