Modified CGA to VGA Scaler to accept clean sync RGB SCART

[fagin]

Don't do that yet....

Take clear pictures of your PCB, SCART wiring and connection to the header loom.

[Beaps]

OK I will vid to youtube in a bit

[fagin]

I'd prefer images than a video.

[Beaps]

OK here you go






Dont worry the solder does not overlap the other tracks

[fagin]

It looks OK from what I can see.

What console are you trying it with and what input setting are you choosing on the scaler?

Can you crack open the console scart lead so I can see how that is wired up?

[Beaps]

Thank goodness it looks ok!

I am trying to hook up my Sega Saturn (Jap), SNES (USA version)

Ok I will post pic ohf the scar head

[fagin]

What input are you selecting?

[Beaps]

RGBHV Mate

[fagin]

No, that's the output.

On the scaler you need to tell it what type of input youre using. IE RGBs, RGBHV etc.

[Beaps]

RGBHV Mate

[Beaps]

My saturn scart goes like this mate

Saturn Pin | My Soldering Pin

Brown | Pin 2 on IC
Black | Nothing
Black with resister | Nothing
Nothing | Nothing
Nothing | Nothing
Nothing | Nothing
Nothing | Nothing
Yellow | Nothing
Nothing | Nothing
Orange | To the phonos

[Beaps]

& I have wired it to this pin on the back of the CGA

[Beaps]

Wire the GROUND of the header (black) to SCART pin 17

When I have opened up all my scart leads pin 17 is RED (from RGB)

GROUND looks to be pin 18 on the scart - is that right?

[fagin]

I need a picture of your Saturn SCART wiring.... that explanation above don't mean shit to me.

[Beaps]

Here you so Saturn scart

[fagin]

A picture speaks a thousand words and also highlights a crap SCART cable!

You have no audio ground or composite video ground on that SCART cable.

Bridge (on your SATURN SCART cable) from PIN 18 to PIN17 AND PIN4.

Give that a whirl (at the moment your PCB is not getting any ground signal, so that's why it won't work).

[Beaps]

Hold the front page, I have a picture!!!!

Red is missing but I guess I got the red on the wrong pin.

I disconnect the stereo sound on the plug but that should not be hard to do (he hopes)

I cant thank u enough fagin, cheers mate.

[fagin]

No problem..... Invoice is in the post!

[Beaps]

hahahaha

I gotta admit it was sooooooo worth it - Saturn looks jaw dropping!

Right on to the next one lol

I tried my CD32 on the and looked at how I did the Saturn & I managed to get a picture fine but its snowing/crackling a bit?

So then I tried me SNES, no picture at all when I plugged it in the CGA. I opened up the scart WOW it looked well different loads of barrels on the tips of the pins & the RGB & other wires were all in different place. It worked fine in my TV not the RGB port of the scart so I thought hey let me rewire it like the Saturn one (Mario Kart here I come)

Wired it like my Saturn &...... nuttin, tried it back in my TV, Nuttin. Do I need to get a special scart for a USA SNES or something?

[fagin]

F me... if you think the Saturn looks jaw dropping on this scaler, you'd shit your pants if you actually used a scaler that was "proper"! lol Welcome to the world of scalers.

CD32.....

The snowy "thing" maybe a sync or interference problem.

Crack open your SCART lead, take a photo (make sure its really clear) and post it up.

As for the SNES...

Re-wire back to how it was (don't run before you can walk! lol), take and post a picture for me.

[Beaps]

Great ok I will post the cd32 one first. It's basically a been hard wired to accept a neo geo scart cable which has been achived by taking the rgb off an internal chip, as the cd32 only has s-video & composite on the back.

As for the snes I am snookered as I don't know how it first looked as I just dived straight in (a little high from getting it to finally working I think) and started changing the pins

[fagin]

Ahh don't worry about the CD32 wiring... It will be down to the mod then IMO. I can't advise on that I'm afraid.

[Beaps]

All it is, is a scart lead that supports v sync, 5v,red, blue, green, ground?

[Beaps]

Here you go mate

I put the big cable there joining the 2 pins together



Here is the static I mentioned



Thanks

[Beaps]

Also when I mount this in a box, how easy would it be to add a power switch on/off?

[fagin]

Doesn't appear to be anything going to PIN 17 - should be a ground on this.

[Beaps]

Great I'll try that and let u know.

What am I gonna do about the snes scart, buy a new one?

[fagin]

You can rewire put you'll need to have a multimeter.

If you decide to buy another, you'll need a NTSC wired one.

http://members.optusnet.com.au/eviltim/ ... t.htm#snes for details of how to rewire.

[Beaps]

Here is my setup - just tryin to keep it clean looking

[Beaps]

I wired ground to pin 17 and still no joy - picture is not even coming on now?





Going forward will I have to modify all my scarts to work with this setup?

By the way do you own a Lindbergh Fagin?