SCART to YUV converter, video has a green tint

[the_miker]

Help! I'm using a SCART to YUV converter (model # CVS287) that I've had for a while. I'm not sure when it started but the picture has a green/yellow "tint" to it, especially noticeable when there is a lot of white on the screen, like the initial Sony logo when booting the original PS1.

It's not the actual SCART cable coming from the console either, as I've tried a few different ones.. PS1, Genesis, SNES. These consoles also run through an HD Box Pro but I've eliminated that as being the problem. I have my DC running through the VGA port on the HD Box Pro (through a VGA Box) and white looks pure white on every DC game I try. Also tried hooking up the Wii to the HD Box Pro via component just to be sure and that looks pure white too. The problem is definitely the CVS287. Only thing I can think of is the AC adapter I'm using, just a cheapy one I got at Radio Shack back when I bought the converter itself (it didn't come with one), maybe it crapped out?

Any ideas? I opened up the converter to do a visual inspection and didn't see anything wrong. Kinda wondering about those orange screw-like things though. Can I turn those somehow, and if so, would it change anything? Check the picture below, click it for super hi-res.

[Hobie-wan]

It won't be the power. Those orange things are variable resistors. You may be able to turn one and affect tint, but be very careful not to move them to much. You might fix it or you might completely screw things up if you turn one or all too far and lose your place. See if anyone else has a concrete suggestion, but if not you might give them a go. If you have a multimeter, measure the resistance on each one and write it down so you can go back to where you started, otherwise you might mark your starting point with a fine point marker or pencil. With it hooked up and running, turn one of them very slowly a little in each direction and see how it affects the picture. If it doesn't affect the overall tint or a single red, green, or blue color, put it back where you started and try another.

[the_miker]

Dude that worked like a charm, thanks! It ended up being the second one I tried. The first one didn't seem to change anything but I still set it back to where it was originally. For the one that I did change though.. going one way seemed to add red and the other way seemed to add blue/green so I'm guessing that was indeed the tint. Adjusted it so the Sony logo screen on the PS1 is white as a cloud. That would have bugged me forever if I didn't fix it, haha. At least now I know what to do if the color ever seems off again.

If anyone has this issue in the future, I made a very minor adjustment to the second resistor from the left in my picture, bottom row. The one that seemed to do nothing was the left-most one, also in the bottom row. I did not mess with any of the others.. yet.

[Hobie-wan]

Cool. Glad you got it sorted.

[Billkwando]

I know I'm bumping an old thread, but I wanted to post this for anybody who finds this thread on Google, like I did.

http://www.youtube.com/watch?v=yYN906grLsM

There are actually 4 different knobs you can adjust.

The controls are (by knob number, the numbers are labeled in the video):
1: Yellow/blue balance
3: Red/green balance
4:Red/yellow balance (very subtle)
6: Color intensity

These probably aren't the proper technical names of the adjustments (lol) but hopefully this will help the folks that don't know about these additional adjustments.