Axunworks RGB to Composite & S-Video black and white

[Fulgoreki]

Hi, I bought one of these recently and I can't get color from it. I have tried 3 different scart cables. I'm using it on a Sega Genesis Model 1.
Does anyone have a solution?

 

[Neo Alec]

Hi. Rule out the TV, rule out the s-video cable, rule out the Axunworks. The chroma pin on the s-video isn't making a connection.

 

[Neodogg]

I had an issue like this and it was a ground issue...

 

[Fulgoreki]

Hi. Rule out the TV, rule out the s-video cable, rule out the Axunworks. The chroma pin on the s-video isn't making a connection.

The TV is fine I have other stuff connected to it on S-video, S-video cable is fine I connected it to my DVD player worked just fine.

 

[Fulgoreki]

I had an issue like this and it was a ground issue...

How would I fix something like that?

 

[ChuChu Flamingo]

Does this work with all Sync types? Genesis 1 can have CSYNC and composite sync. With CSYNC the scart cable can either be TTL voltage level or 75 ohms.

But to me it sounds like a pin isn't grounded like Neodogg/Neo Alec stated

 

[Neodogg]

How would I fix something like that?

Do you have a multimeter? Start checking continuity on ground.

 

[ggallegos1]

Help me understand why people use downscalers when upscalers for modern TVs exist

 

[SpamYouToDeath]

Is the black+white picture looking okay, aside from being black+white? Can you see patterns or interference that look like the missing color signal? Is the crystal on the board the right frequency for your TV's color system? Is the encoding right?

 

[Fulgoreki]

Does this work with all Sync types? Genesis 1 can have CSYNC and composite sync. With CSYNC the scart cable can either be TTL voltage level or 75 ohms.

But to me it sounds like a pin isn't grounded like Neodogg/Neo Alec stated

I think all my cables are CSYNC. Do you know where I could find a composite sync cable?

 

[Fulgoreki]

Do you have a multimeter? Start checking continuity on ground.

No unfortunately I don't have a multimeter.

 

[Fulgoreki]

Is the black+white picture looking okay, aside from being black+white? Can you see patterns or interference that look like the missing color signal? Is the crystal on the board the right frequency for your TV's color system? Is the encoding right?

Yeah, the picture is perfect besides the black and white.

 

[awbacon]

Anyone try this yet on arcade light gun PCBs? Highly assuming it’s like every converter and breaks the raster sync on the light gun but…never know