RGB Sega Saturn rainbow banding?

I'm not exactly sure what to call this but it reminds me of "rainbow banding" found on early Sega Genesis models.

I'm getting the vertical bars "rainbow banding" on a model 2 Sega Saturn with RGB feeding through the Audio Authority 9A60. The signal output is 720x240/60p to Component on Samsung HDTV.

I hooked everything up to my older SHARP AQUOS and the output was 480i but I couldn't see the bars anymore. Maybe they were just harder to see because of different video settings though?

Does anyone know what might be happening here? Thanks



I cranked up the RGB in PhotoShop on that first image so you can see better.

 

Audio Authority 9A60 does not upscale. Are you sure the TV correctly supports 240p?

 

That's what my TV says. I just get the "rainbow banding" vertical bars. My older SHARP TV (not pictured) scales 240p to 480i though.



I've also done the PS1 @ 240p test from a PS2 over Component and there weren't issues.

 

Here's an enhanced image showing the "rainbow banding" vertical bars. Updated original post.

 

x

 

I just have some wires pinned in so that's totally possible. I still need to make a proper cable.


What's weird is that I can't see the bars when everything's connected to my older TV. Could my newer TV need some components (in the cable) to filter out the bars?

 

What kind of sync are you using? This isn't actually a SCART converter, so it's not supposed to receive sync via CVBS (composite video).

 

Csync (Raw Sync) from the Saturn

Connects to both H/V Sync on Audio Authority RGBHV

 

Maybe look into a sync separator. I believe H/V Sync is slightly different than just split Csync.

 

Are you're talking about "Sync on Composite"? I'm actually using Pure Sync (no video to split)

 

No. I was suggesting you might need a device that separates pure sync into H sync and V sync.

Sega Saturn doesn't output either discrete H sync or V sync.

 

Hmm yeah I see what you're saying but I wonder why my other TV doesn't have any issue. Maybe this TV is more sensitive to power on Csync and needs a capacitor. I've read some people use 220uF + 75 Ohm on Csync. Others are using 470uF without the resistor.

 

I'm not familiar with it myself, but I've found some discussion on the subject.
http://shmups.system11.org/viewtopic.php?f=6&t=56910

Either way your current setup isn't quite correct. The Audio Authority is receiving RGBs, when it's designed for RGBHV.

 

I also read some more about Sync Strippers. I always thought they were just used to strip sync from Luma or Composite. But I just learned they can also clean up noisy Csync. The components are cheap so it's worth trying. I can also use for consoles that don't have Csync.

 

It's confusing huh. For ideas, check out the specs of an EL4583. https://www.intersil.com/content/dam/Intersil/documents/el45/el4583.pdf

 

Yeah so many variables. Nice specs for the EL4583.

Do you know where I can find detailed specs for my Samsung UN32EH5300? I'm mostly interested in recommended voltage input parameters for Component video. Thanks

 

At the moment no. Trying to find a service manual so far has led me to shifty paywalls.

 

Thanks for trying. Seems most modern hardware doesn't have detailed specs readily available. I wonder if I'd be wasting my time contacting Samsung directly.