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 Post subject: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Sat Mar 18, 2017 8:10 pm 



Joined: 27 Nov 2014
Posts: 114
Location: Hellhole
Yeah, question is on the thread title :mrgreen:

Since this cable is for PAL SNES, I need to remove the resistors, but I do not know which ones I remove.
Some photos to help:

Image

Image

Image
I think all I need to do is remove the big black component. Should I do something else besides that? What is the purpose of the other components?
My intention is to use with the NESRGB and N64RGB, both do not need caps.

Speaking of caps, why does the NTSC SNES need them anyway?


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Sat Mar 18, 2017 9:26 pm 



Joined: 15 Aug 2009
Posts: 561
Location: Europe
I'd honestly suggest selling it to fund an official GC RGB SCART lead.

Use mine with my Super Famicom and previously my RGB N64.


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Sat Mar 18, 2017 11:48 pm 



Joined: 27 Nov 2014
Posts: 114
Location: Hellhole
speedlolita wrote:
I'd honestly suggest selling it to fund an official GC RGB SCART lead.

Use mine with my Super Famicom and previously my RGB N64.

Unfortunately this ship has already sailed...

A few years ago it was cheap, now an official GC SCART is fucking expensive :|
The SNES model has the same quality and it costs much less.


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Sun Mar 19, 2017 12:24 am 


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Joined: 09 Apr 2014
Posts: 140
Location: UK
Are there three capacitors on the 7/11/15 pins? Looks really different to the official GC cable. I removed three caps on a 3rd party cable which had these separate capacitors for the R G B lines but I can't see them on yours.

This might help: http://www.mmmonkey.co.uk/pal-snes-rgb-cable-fix/

I have the official GC Scart (unmodified) and it will work on an rgb modded n64, at least it did on mine, it also worked on my pal 1 chip SNES but not on my other SNES which isn't a 1-chip.


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Sun Mar 19, 2017 3:29 am 



Joined: 27 Nov 2014
Posts: 114
Location: Hellhole
Gunstar wrote:
Are there three capacitors on the 7/11/15 pins? Looks really different to the official GC cable. I removed three caps on a 3rd party cable which had these separate capacitors for the R G B lines but I can't see them on yours.

This might help: http://www.mmmonkey.co.uk/pal-snes-rgb-cable-fix/

I have the official GC Scart (unmodified) and it will work on an rgb modded n64, at least it did on mine, it also worked on my pal 1 chip SNES but not on my other SNES which isn't a 1-chip.

This is a PAL SNES scart cable, so there is no caps, just resistors on R G B lines.
The GC SCART cable works with later model PAL SNESs, but not with early models.


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Sun Mar 19, 2017 1:29 pm 



Joined: 22 Dec 2010
Posts: 143
Just remove the 5 pin black component that you mentioned for a straight through cable. The other components are for 16:9/4:3 and composite/RGB automatic switching. The NTSC SNES needs caps to remove the DC offset in the RGB signal. Not sure why the PAL SNES doesn't need them though, maybe it doesn't have a DC offset to begin with.


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Sun Mar 19, 2017 1:36 pm 



Joined: 20 Feb 2016
Posts: 103
Alternatively if you don't want to desolder you can pull out the R,G,B and composite video pins from the blue connectors and connect them together with some left over legs from capacitors/resistors.


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Sun Mar 19, 2017 5:31 pm 



Joined: 08 Mar 2017
Posts: 8
I don't think there's enough space to fit the required 3 x 220uF capacitors.


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Mon Mar 20, 2017 12:32 am 



Joined: 27 Nov 2014
Posts: 114
Location: Hellhole
kel wrote:
Just remove the 5 pin black component that you mentioned for a straight through cable. The other components are for 16:9/4:3 and composite/RGB automatic switching. The NTSC SNES needs caps to remove the DC offset in the RGB signal. Not sure why the PAL SNES doesn't need them though, maybe it doesn't have a DC offset to begin with.

Thanks for the confirmation. I just removed the component, the dark image is fixed, but now I have the checkerboard pattern issue :(
Not sure if is a problem with the cable itself or the missing caps. The same things does not happen with the GC cable.
My eight pin to female scart has a built in sync stripper, I thought this would always give me a clear image.

paulb_nl wrote:
Alternatively if you don't want to desolder you can pull out the R,G,B and composite video pins from the blue connectors and connect them together with some left over legs from capacitors/resistors.

Thanks for the suggestion, but it's a lot easier just remove the component :)


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Mon Mar 20, 2017 1:39 am 



Joined: 22 Dec 2010
Posts: 143
I'm not sure why you have the checkerboard pattern now but if your GC cable is the official one then it will have a 75ohm resistor to GND and a 220uf cap in series on the sync signal so it stands to reason that if your GC cable doesn't have the checkerboard pattern then putting one or both of those on the sync signal of your SNES cable should hopefully give the same result as the GC cable.


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Mon Mar 20, 2017 5:19 am 



Joined: 27 Nov 2014
Posts: 114
Location: Hellhole
kel wrote:
I'm not sure why you have the checkerboard pattern now but if your GC cable is the official one then it will have a 75ohm resistor to GND and a 220uf cap in series on the sync signal so it stands to reason that if your GC cable doesn't have the checkerboard pattern then putting one or both of those on the sync signal of your SNES cable should hopefully give the same result as the GC cable.

Damn, I thought it was just removing the resistors and call it a day :|
And yeah, my GC cable is an official one made by Nintendo.
I have no idea how to put the resistor and caps inside.

I think I'll have to buy another GC scart cable
Image
Is this good?


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 Post subject: Re: Anyone know how to mod a PAL SNES Scart cable?
PostPosted: Mon Mar 20, 2017 5:29 pm 



Joined: 05 Feb 2008
Posts: 113
I have a PAL SNES SCART cable that I modded for NTSC consoles. I ended up completely ditching the little PCB altogether and rewired and added the caps to conform to the NTSC wiring spec. One nice side effect is that you can use the 12V wire as a dedicated CSYNC line.


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