[Coco] RGB cable for Samsung SyncMaster 711mp
retrocanada76 at gmail.com
Thu Apr 10 17:54:49 EDT 2014
i think the pin 16 needs a Zener diode.
On Apr 10, 2014, at 5:04 PM, "Ken H." <dragon.atv at gmail.com> wrote:
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
>> and pin 16 measures about 5v.
>> Can you tell what's the problem based on how this image looks?
>> Coco mailing list
>> Coco at maltedmedia.com
> Long live the CoCo
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