Schield RGB cables: getting rid of sound buzz

[Magicalbottle]

How exactly do I check if my RGB cables are correctly shielded and how do I shield them properly? Some cables have a slight buzz when connected (MD2, NEO most notably).

[TillDawn]

I am interested in this as well.

I have several Mega Drives/Genesis models (2 x Mega Drive 1, Asian PAL Mega Drive 2, Genesis 2) and they all have this annoying audio buzz. It is especially prominent when the screen has a high brightness, which I guess indicates crosstalk between video and audio. I have tested, however, several different RGB leads, some of which I bought and two of which I made myself, and the buzzing persists in every case and every console/lead combination. I am beginning to suspect that this is not a cable issue but a general problem of the MD/Genesis. Are there any thoughts on that? Perhaps some internal modification that gets rid of the crosstalk?

[evil_ash_xero]

Just buy a well shielded cable, and see if it helps.

The brightness with the buzz is a dead giveaway for bad shielding.

[Magicalbottle]

Just buy a well shielded cable, and see if it helps.

The brightness with the buzz is a dead giveaway for bad shielding.

Ok, so how do I shield the cable myself?

[Fudoh]

You use multi-coax cables which offer seperate shielding for certain wires. It's hard to find managable multi-coax with enough lines to run every single signal shielded on it's own. If you don't have enough coax lines, use them for audio, not for video (since you can more likely hear the video's influence on the audio than see the audio's interference with the video).

E.g.

[Magicalbottle]

Thanks for the headsup, but I have no experience in soldering other than modding the Saturn 4-in-1 AR. I thought you could just solder the shielding pin of an RGB cable to the metal sheath and that was it.

[eightbitminiboss]

Thanks for the headsup, but I have no experience in soldering other than modding the Saturn 4-in-1 AR. I thought you could just solder the shielding pin of an RGB cable to the metal sheath and that was it.

Shielding at the end will do jack when the signal is already crosstalking.