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160 posts

Master Geek
+1 received by user: 18


Topic # 110768 15-Oct-2012 17:15 Send private message


I know this is old technology but I still need to do this: I am trying to make a Sony DVR work with an old Pace decoder. The Pace only has SCART connectors and the best input on the Sony is s-video. I have a SCART adaptor with s-video connector. When I plug this straight into the TV, the picture is as good as s-video ever is. However, when I plug it into the DVR, which upconverts to HDMI or component, I get colour interference artefacts on both outputs. Any strong, solid block of colour, especially anything deep red (like the Sky News logo), casts a prominent shadow completely across the screen, causing any flesh tones or light colours in it’s path to turn a sickly shade of grey. Wherever strong colours appear there are streaks across the screen. S-video sources other than the Pace decoder do not cause this effect. I can also get rid of it by running the video through my Yamaha amp, which has s-video switching connectors on all inputs. Only the aux input gets rid of the effect altogether, though any input greatly improves it. This makes me wonder if the problem might have anything to do with one of the signals from the Pace being too strong. Does anyone know anything about this? Can this grey ‘bleeding’ effect be eliminated by something as simple as attenuating the signal? Any help would be much appreciated.

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2122 posts

Uber Geek
+1 received by user: 41


  Reply # 701677 15-Oct-2012 18:20 Send private message

Could it possibly be a macrovision problem?
I think Sky use macrovision but not all the time.
My dad has tried to record some programs to his DVR and had it just say that it can't record the program because it is copy protected (or something like that) but other programs record fine.




1370 posts

Uber Geek
+1 received by user: 274


  Reply # 701700 15-Oct-2012 19:02 Send private message

The MySky uses macrovision, but my understanding is that the Pace box doesn't. I can confirm that I had no issues connecting the box to the a DVD recorder when I had one of the Pace units.

I suggest:
1. Going into settings and checking that the Pace unit is actually set to output to SVHS instead of component.
2. Checking the SCART adapter is set to output not input - many of them have a switch on them.
3. Trying a different SVHS cable, if you have one, to rule out a cable issue.
4. Trying it with a composite cable to rule out macrovision.
5. Ringing Sky - hooking up the decoder to a recorder is allowed, and the technician even supplied the cable and hooked mine up, including testing it worked, as part of the install.

2122 posts

Uber Geek
+1 received by user: 41


  Reply # 701722 15-Oct-2012 19:26 Send private message

My dad has a basic Sky decoder, and not a Mysky box, and he has Macrovision issues on some programs but not very often.




1544 posts

Uber Geek
+1 received by user: 55


  Reply # 701807 15-Oct-2012 21:54 Send private message

I've got a basic Sky decoder (small silver Pace) and have no problems recording with my Panasonic BW880. Using composite A/V input from the SCART on the Sky. The only things that don't record are Pay per view stuff which are copy protected.
I tried running SVid to my previous TV (Panasonic) but the picture was unwatchable. The colour was all screwed up and the picture stuffed with moire type effect. Composite was fine. No SVid input on the new TV or recorder to compare. I assumed it was a problem with the Sky box outputs.

484 posts

Ultimate Geek
+1 received by user: 2


  Reply # 701889 16-Oct-2012 08:53 Send private message

You need a chroma terminated Scart lead - these have a 75ohm resistor on the Chrominance leg of the wiring - some equipment works fine without it but quite a few have issues.

If you get hold of an official Sky Scart/S video lead you should be fine.



160 posts

Master Geek
+1 received by user: 18


  Reply # 702331 17-Oct-2012 09:28 Send private message

Thanks for the replies. The SCART cable suggestion sounds particularly interesting. I might try to contrive something myself if it only takes a 75 ohm resistor. The main problem is trying to figure out how to get this into the signal line without destroying a cable or adapter but I will give it a go.
 
 

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