Noisy RGB cable - how to fix?
Nov 24, 2010 20:44:56 GMT
Post by zyrobs on Nov 24, 2010 20:44:56 GMT
I ordered an RGB cable from play-asia, and while the picture is very clear, it has two huge problems:
First, certain colors get a "wave" effect going on them. The blue in the Saturn bootup logo and the top of the cd screen, or the yellow background in the VF Kids title screen. It's like a diagonal wave effect is crawling through the screen. It ruins the picture so much that I'd rather just keep using composite.
Second, the audio has EXTREME amounts of noise. No noise at bootup, but the brighter the screen gets, the more noisy the audio signal is. In particular, the all-white VF2 title screen emits an almost screeching noise, while empty black screens give clean sound.
How to fix these issues?
I noticed that only Audio Ground and RGB Ground pins are connected inside the SCART plug. I tried moving pins around, having only one ground pin, or having the ground pin connected to pin21 (the chassis/metal cover) of the scart plug, but it made zero difference. Should I connect every other ground pin (r/g/b ground, composite ground, pin 21, etc)?
Other than that, the only idea I have is cannibalizing the cable and making a custom connector with proper pinouts - assuming the plastic that holds the 10-pin minidin together won't melt from the soldering iron. But if the saturn sends out noisy signals, that won't help. On the other hand, composite has perfectly clean audio, so it's probably the shit quality on the play-asia cables that craps it up / causes too much signal interference.
Any way I can fix this cable with a soldering iron, or should I just get another cable from somewhere else? I've heard that the early batches of the official Sega RGB cables (HSS-0109) also had this noise problem... And a place called the Tokyo RGB Hospice made custom RGB cables that had way better quality, because the Sega cables were shit.
Consolegoods is the only other site that has RGB cables, and their cables ought to be different as it works on both pal and ntsc models - meaning they have different pinouts, than the Play-asia cables, and so they may work better. Anybody has any experience with their cables?
First, certain colors get a "wave" effect going on them. The blue in the Saturn bootup logo and the top of the cd screen, or the yellow background in the VF Kids title screen. It's like a diagonal wave effect is crawling through the screen. It ruins the picture so much that I'd rather just keep using composite.
Second, the audio has EXTREME amounts of noise. No noise at bootup, but the brighter the screen gets, the more noisy the audio signal is. In particular, the all-white VF2 title screen emits an almost screeching noise, while empty black screens give clean sound.
How to fix these issues?
I noticed that only Audio Ground and RGB Ground pins are connected inside the SCART plug. I tried moving pins around, having only one ground pin, or having the ground pin connected to pin21 (the chassis/metal cover) of the scart plug, but it made zero difference. Should I connect every other ground pin (r/g/b ground, composite ground, pin 21, etc)?
Other than that, the only idea I have is cannibalizing the cable and making a custom connector with proper pinouts - assuming the plastic that holds the 10-pin minidin together won't melt from the soldering iron. But if the saturn sends out noisy signals, that won't help. On the other hand, composite has perfectly clean audio, so it's probably the shit quality on the play-asia cables that craps it up / causes too much signal interference.
Any way I can fix this cable with a soldering iron, or should I just get another cable from somewhere else? I've heard that the early batches of the official Sega RGB cables (HSS-0109) also had this noise problem... And a place called the Tokyo RGB Hospice made custom RGB cables that had way better quality, because the Sega cables were shit.
Consolegoods is the only other site that has RGB cables, and their cables ought to be different as it works on both pal and ntsc models - meaning they have different pinouts, than the Play-asia cables, and so they may work better. Anybody has any experience with their cables?