Thanks for posting this video, I used it on my U.K. PAL CoCo2 and it works a treat. The picture is really nice and clear and a massive improvement over the composite mod I had fitted previously.
Man I have been looking for any info on this mod, I bought a PAL coco2 about 2 years ago and it had the power cord cut and was sold as is, I fixed the power cord but had trouble tuning it in on a tv, thank you for the circuit schematic I can now get to view my coco2 for the first time ever🤘🤘
Great topic. I'm really enjoying this series. What's taking that NTSC CoCo 2 so long to arrive? I'm really looking forward to that one. Oh, and thank your multimeter for beeping at us. And love the outtake - those always make me laugh, even mine.
Catching up on a backlog of videos. There is a composite mod for the NTSC Coco That is pretty common. It's a premade drop in. I just got the CoCo SDC. Haven't gotten a chance to use it. Need to see what is involved with setting it up. Looking forward to seeing what you come up with as far as video for the CoCo. The composite mod isn't bad. Way better than stock RF.
Yeah I'm still planning on doing a video on the cocoSDC, but going to sort out the power supply on the 128 first. As far as the video mod on the NTSC Coco2, there are so many changes involved so I think the modulator replacement from Ed Snider is the only realistic way to go
I did a S-video enhancement mod on my Atari 65XE by using a known mod but added a small video amp IC and it had a terrible picture until I remembered that on another computer I had added a small signal diode to the Chroma line, looked a whole lot better after that. No idea if that would work with Your Dragon or Coco.
Probably wouldn't work in this case as the CoCos only have a few hundred millivolts on their chroma lines, so it wouldn't be high enough for the voltage drop of the diode. But I can see how it would work for something like the 65xe, from memory they have 1Vp-p on the chroma line
@@TheRetroChannel I remembered a bit better now. The diode I used on the chroma signal to reduce the vertical banding on both Atari 2600 and Atari 65XE s-video mods, similar video chips in these designed by Jay Miner I believe. I used a THS7316D video amp IC then added pots inline and to ground on the outputs to tweak it, but once You get the desired result should use fixed value resistors. I've since fitted a RGB mod to my Atari 2600 but the 65XE still has the s-video mod fitted.
C64 Commando theme on the Coco!
Impressive.
I laughed at the Noel’s Retro Lab shout out. Love his work, and love what you are doing. I learn some thing new with each video. Keep it up!
Thank you Joe
Thanks for posting this video, I used it on my U.K. PAL CoCo2 and it works a treat. The picture is really nice and clear and a massive improvement over the composite mod I had fitted previously.
Thank you for the video! Interesting that the mod is so simple on the PAL machines, compared to the NTSC ones.
Yeah the NTSC CoCo2 is very different from the PAL ones in how they used the MC1372. I'll explain a little more on the difference in the next video
Man I have been looking for any info on this mod, I bought a PAL coco2 about 2 years ago and it had the power cord cut and was sold as is, I fixed the power cord but had trouble tuning it in on a tv, thank you for the circuit schematic I can now get to view my coco2 for the first time ever🤘🤘
Great topic. I'm really enjoying this series. What's taking that NTSC CoCo 2 so long to arrive? I'm really looking forward to that one. Oh, and thank your multimeter for beeping at us. And love the outtake - those always make me laugh, even mine.
Catching up on a backlog of videos. There is a composite mod for the NTSC Coco That is pretty common. It's a premade drop in. I just got the CoCo SDC. Haven't gotten a chance to use it. Need to see what is involved with setting it up. Looking forward to seeing what you come up with as far as video for the CoCo. The composite mod isn't bad. Way better than stock RF.
Yeah I'm still planning on doing a video on the cocoSDC, but going to sort out the power supply on the 128 first. As far as the video mod on the NTSC Coco2, there are so many changes involved so I think the modulator replacement from Ed Snider is the only realistic way to go
"Thanks to my multimeter for beeping at me..." Made me laugh *lol*. Thanks! :D
I did a S-video enhancement mod on my Atari 65XE by using a known mod but added a small video amp IC and it had a terrible picture until I remembered that on another computer I had added a small signal diode to the Chroma line, looked a whole lot better after that. No idea if that would work with Your Dragon or Coco.
Probably wouldn't work in this case as the CoCos only have a few hundred millivolts on their chroma lines, so it wouldn't be high enough for the voltage drop of the diode. But I can see how it would work for something like the 65xe, from memory they have 1Vp-p on the chroma line
@@TheRetroChannel I remembered a bit better now. The diode I used on the chroma signal to reduce the vertical banding on both Atari 2600 and Atari 65XE s-video mods, similar video chips in these designed by Jay Miner I believe. I used a THS7316D video amp IC then added pots inline and to ground on the outputs to tweak it, but once You get the desired result should use fixed value resistors. I've since fitted a RGB mod to my Atari 2600 but the 65XE still has the s-video mod fitted.
Yep pretty much do the same using pots when designing these and then use the closet value resistors for the final version
How can i send you a file that contains info about dragon 32 S-Video mod
Hey John, you can find my email address in the about page for the channel 👍
Ba ha ha.... nice (Sid) and again (Multimeter)