SNS-001 consoles rgb output: some do and some don't ?

[Markfrizb]

I have several of the first generation us Snes consoles. Some of them output thru the A/V port RGB and others do not! I'm scratching my head---- I've opened them both up and they identical inside except for 1 chip. One have s-enc and the other is B ?? ( I forget the number at the moment)

So here's my question.... Is there a way to enable the console that isn't outputting RGB to "turn on" the RGB?


Any help is much appreciated.

Mark

[koitsu]

Kevin Horton might have some things to say about this since he's been involved with the RGB and S-Video modes for the 2nd-gen model in the past (yes I know you're talking about the first-gen models):

http://www.gamesx.com/rgbadd/snes2rgb.htm
http://www.gamesx.com/rgbadd/snes2svid.htm

I'll send kevtris a PM point him to this thread so he can maybe shed some light on what you may be seeing.

The only thing I can contribute at this point is a small story:

Back in 1993 when I attended Apple Expo West in San Francisco, after the expo a bunch of us went back to a colleague's house in Berkeley. One of the attendees had hooked up a SNES to an Apple IIGS monitor (which takes RGB in). The picture quality was amazing, but you probably know that by now. But two things caught my eye:

1. What I saw consisted of a customised AV cable that had some capacitors soldered in-line,
2. Sitting on the chair next to the monitor was a hair dryer.

I asked quite literally "WTF?" with regards to the appliance -- I was told that if the monitor was cold, it wouldn't show jack squat picture-wise when hooked up to the SNES (more specifically: "you'd have to wait quite literally a couple hours for it to get warm enough for it to work"). Using a hair dryer on the monitor (blown into the ventilation areas) apparently sped the process up greatly (to something like 5-10 minutes).

Why the hair dryer was truly needed I have no idea (from an EE perspective I mean), but I was assured by 2 separate people -- including one quite well-known fellow who worked for Sega writing compilers, as well as some SNES games (for a different company) as well -- that there was in fact legitimacy to it.

[Markfrizb]

Kevin Horton might have some things to say about this since he's been involved with the RGB and S-Video modes for the 2nd-gen model in the past (yes I know you're talking about the first-gen models):

http://www.gamesx.com/rgbadd/snes2rgb.htm
http://www.gamesx.com/rgbadd/snes2svid.htm

I'll send kevtris a PM point him to this thread so he can maybe shed some light on what you may be seeing.


Thanks!


The only thing I can contribute at this point is a small story:

Back in 1993 when I attended Apple Expo West in San Francisco, after the expo a bunch of us went back to a colleague's house in Berkeley. One of the attendees had hooked up a SNES to an Apple IIGS monitor (which takes RGB in). The picture quality was amazing, but you probably know that by now. But two things caught my eye:

1. What I saw consisted of a customised AV cable that had some capacitors soldered in-line,


I know what you mean. The "scart" cable that has rgb is what is used to get the rgb out. It has some 220uf caps inside it for the dc filtering.



2. Sitting on the chair next to the monitor was a hair dryer.

I asked quite literally "WTF?" with regards to the appliance -- I was told that if the monitor was cold, it wouldn't show jack squat picture-wise when hooked up to the SNES (more specifically: "you'd have to wait quite literally a couple hours for it to get warm enough for it to work"). Using a hair dryer on the monitor (blown into the ventilation areas) apparently sped the process up greatly (to something like 5-10 minutes).

Why the hair dryer was truly needed I have no idea (from an EE perspective I mean), but I was assured by 2 separate people -- including one quite well-known fellow who worked for Sega writing compilers, as well as some SNES games (for a different company) as well -- that there was in fact legitimacy to it.

The only thing I can think of is the electron gun heaters inside the neck of the CRT tube. It makes the orange glow that you can see in back of the tube. As they heat up, the more electrons they throw off, which can affect the brightness of the picture. When CRT's get dim, usually the heaters are wearing out or get corroded.

[Markfrizb]

Opps... I replied to some of the post in the quote section. See above. Still figuring out this post setup on the mobile device.

Mark

[Near]

I have a lot of SNES and Super Famicom decks. Multi-chip, onboard APU, and 1-chip. Every single one outputs RGB. Some need 220uF capacitors on the RGBS lines. Some do not.

The only deck that doesn't natively support it is the SNES Jr, where you have to solder wires from the RGB encoder to the MultiAV port first. You will need 75ohm resistors on the RGB lines for the Jr, as the signal is way too strong otherwise.

I've never had to use a hair dryer on any of my monitors to get RGB video.

[Markfrizb]

The hair dryer is an olddddddddddd deal.

I know the Jr. Doesn't output rgb. And I do know about the caps also. But I have several Snes consoles that are version 1 (the original) and don't output rgb. I'm just scratching my head on why half do and the half don't. It's really got me boggled

Mark

[mikejmoffitt]

I believe the ones with S-RGB encoder it is much easier to directly pull RGB. The earlier ones, with the S-ENC encoder (the component one!) you need the caps in series.