Sudden bright video output on GC

[Blargaman91]

This may or may not be a common problem, but it's happened to me twice. Two of my GC motherboards acquired very unusually bright video with composite output suddenly upon turning them on one time. The last time it happened, just now, it was all working fine when I turned it off, then I tinkered around a bit with everything. All I can remember specifically doing was scraping some dirt from between the connected Wiikey's pins and moving the point from where I got video. Moving the video wire should have nothing to do with this because on the other board this happened to it outputs the bright video no matter where along the path you get video from. I would really, really like to have this problem fixed because it happened both times right after I finished making and completely wiring FCC wire adapters, which is a lot of work for me. If you can, please share your knowledge on the subject (I can share pictures if needed, but I haven't taken them yet).

 

[Bakuku]

Pics are always nice.

The top guys here can almost always determine the problem if they have visual info.

Greets

 

[Blargaman91]

These are all the pics I can get until a day or two from now, and they may not help. It's on a CRT monitor, and the image appears darker on camera than it really is. I don't have a normal working GameCube to take a picture of and compare it to, so I don't know how this could help.

This is an IPL v1.0 motherboard, by the way. The other one this happened to was not.

 

[Blargaman91]

Anyone? This is a really pressing issue for me, I need help!

 

[Blargaman91]

Okay, I combined the luma and chroma lines of the GC's S-video output using a simple method and got seemingly flawless composite video that way, right colors and all, but I would still really like to have the true composite output working. Does no one know what this is? At least share your ideas, please?

 

[Blargaman91]

Alright, a little update... after the s-video suddenly stopped working and the composite video got extremely dark, I took a dead mobo and performed an AV chip transplant, the most tedious thing I've ever done since all I have is a soldering iron. I turned it on, and all I got was the bright, bright video again. So the problem exists somewhere else on the board. I am now using s-video to composite with this new AV chip until it decides to fail me. I still really want ro find an answer to this mystery.

 

[Elemental]

It doesn't look too bad from the screenshots, and I'm sure you could get used to it, but it's possible that you can just turn down the brightness on the actual screen itself. I mean over-all, this makes it so that you get brighter video options, right? But it's still a problem... If I knew how to help, I would, but I don't really know anything about this stuff. I hope you get everything fixed though!

 

[Blargaman91]

Unfortunately my screen only has the option to get brighter. But I can tell there is just too much white in the picture because using resistance on the composite line just makes everything dimmer and it still looks washed out (it's bad in person). Adding any amount of capacitance to the video line somehow makes it extremely dark! This is a very peculiar problem, especially because only composite out is affected and I can still utilise s-video without a problem...

By the way, it seems to me that combining luma and chroma together give a better picture than the native composite out on the GC, so it might be a good option for people.