Snes Mini/ N64 RGB CSYNC

Would you be able to provide a picture of the output?
The problem with the N64, regardless of what mod you do, will never be breathtaking. A good screenshot to take is on F-Zero, on the first track when the timer is counting down. The track's graphics will give a good indication of how well the mod was done. Mine has a mesh effect on the track, which is not pretty at all. I also see the pattern on reds when playing f-zero.

 

I have tried taking a picture.
I have no way of screenshoting it directly, so I had to take a picture with my phone, so the picture isn't exactly the best.
Hope you/we can use it

 

There, you can see the mesh effect pretty much everywhere. That's caused by not having a pure sync, but a composite sync, signal, AFAIK. Someone will need to clarify. My N64 is a 04 board, so it doesn't have the pure sync circuit built in, so I get the same output as you. Some games, like Rayman 2 look horrendous due to that meshing effect. Some games are barely effected (can't list any off the top of my head). I'll get some screenshots later (got to go to work now).

 

I could try to do the 680K resistor mod later today, see if there is any difference?
I have a revision 3, which is the one he used in the turtorial.

 

Just tried to do the 680K mod, however I have no picture.
Here is a picture of the resistor (covered in heatshrink) soldered on.
I removed the wire I had from pin 9 to 3.
And soldered the 680K to pin 3 (C-Sync pin).
Remember that I had cut the trace from pin 9, was this a mistake?


This is the resistor I used.


If it isn't the soldering or the resistor, it is problably because I need a new cable right?
The old "RGB" cable I have, which is one I build won't display anything, nor will a standard scart to Snes/N64/Gamecube cable.
I live in a PAL region, but the N64 is a Japanese NTSC so would this cable solve my problems?

https://www.retrogamingcables.co.uk...ble-lead-cord-for-sale?tracking=5543fb4c077bb

Or is it something complete different?

 

Sounds like your cable is wired for Composite Video as sync and not Composite-Sync. You need a cable wired for an NTSC SNES and it needs to have C-Sync wired up. Without it, you won't get a picture.

That cable you linked will not work. It's wired for a PAL SNES. Those systems use the C-Sync pin 3 for +12V. You might damage your TV or converter by sending C-Sync to the aspect ratio select pin (pin 8). This cable is designed for an NTSC system, which outputs C-Sync on pin 3: http://www.ebay.com/itm/Super-Ninte...714?pt=LH_DefaultDomain_0&hash=item2edd7b9a0a

A word of caution. Audio/Video cables designed for the PAL SNES will not work on an NTSC system. This includes Composite Video and S-Video cables. The same goes for the other way around for cables wired for NTSC systems. If you use a cable wired for an NTSC SNES cable on a PAL system, it will not work. Whatever you do, DO NOT USE A NTSC CABLE WIRED FOR C-SYNC ON A PAL SNES! The PAL SNES has +12 volts on pin 3 and it will send +12V to the C-Sync/Composite Video/Luma pin of the SCART socket on your TV or converter through an NTSC SNES cable wired for C-Sync! So if you have a PAL SNES, use a cable wired for the PAL SNES and make sure it is using Sync on Luma.

 

I have RGB on my PAL Snes, but I make sure not to use the cable for that system!
Is the resistor and all how it should be?
Could I resolder my own cable to produce Composite-sync?
If not, and the only way to get image on screen is through a new cable.
They will work on a PAL tv right?
Could I buy this one instead?
http://www.ebay.com/itm/SNES-RGB-CS...O-SCART-NEW-/201369847134?hash=item2ee294055e

Or this one?

http://www.ebay.com/itm/SNES-RGB-CS...167?pt=LH_DefaultDomain_0&hash=item2ee2340747
(It's a bit cheaper for me, cause shipping from United States to Denmark is extremely pricey)
Thanks!

 

The resistor mod you did looks correct. If you haven't done so already, repair the trace leading to the composite video pin. If you are not going to use Composite video again, then you do not have to.

If you have the parts, then you can make your own cable. If not, then you can either buy the SNES multi out plug from Helder on the marketplace or use that cable you first linked or this one: https://www.retrogamingcables.co.uk...n64-rgb-av-scart-cable-ntsc-tv-lead-wire-cord.

If you do make your own cable, use this guide:



You will need to make some changes to this diagram though. Make sure to wire C-Sync (SNES pin 3) to SCART pin 20 instead of composite video (SNES pin 9). Also, he has only one ground wired up. Use both ground pins on the SNES multi out. Wire SCART pins 4, 17, and 18 to pin 5 on the SNES Multi Out. Then wire SCART pins 5, 9, and 13 to pin 6 on the SNES Multi Out. Use shielding on each wire then wrap it all up in a shield and put it all in cable shrink tubing. I'm making it sound complicated but this is how I would prevent crosstalk and the 60Hz hum if I made the cable.

The cable should work on your TV perfectly fine. RGBS isn't NTSC or PAL so it will work as long as your TV accepts a 60Hz RGBS signal. If you got a picture before with RGB cables on the N64, then your TV supports it.

 

I won't use composite again I think, otherwise I can always return and fix it some other time.
I think I'm going to buy the cable you linked in this quote, the one I have is a cheap one from China, it's a bit rusty and I can see that my soldering skills wasn't exactly perfect when I made it
Just so I am absolutely sure! This is the options I would want to have selected when ordering one for the N64 right?

Thanks!

 

If your using the framemeister, you could go for the jp21 and use the official connector that comes with it (as it is wired for jp21 by default). but otherwise, EuroScart would be correct. Csync/pure sync is also right.

 

Yes, those are the right options. I'm glad I was able to help. If you ever want to skip analog video completely, OzOnE is coming out with a universal HDMI mod board that has been confirmed working on the N64. It will give you the best picture possible out of the N64. It should look just as good or even better than an emulator.

 

I have read about the HDMI mod board, but I haven't heard any news surrounding it in some time.
So not sure if release is this year or next year, also pricing probably isn't cheap, (Which is entirely fair, do to the amount of work and effort put into it) so it will be something I'm gonna wish for my birthday, Christmas etc
I'm gonna order that cable and look forward to receive it, and hopefully with much better image quality on my N64 !
Thanks !

 

Your welcome. I think it's supposed to be released later this year. He is considering pre-orders. I heard something about $100 but I'm not sure if I'm confusing it with another project.

 

Recieved my cable in the mail today, I got picture and sync
However, not sure if I can note that much difference. That could be because the sun is bashing into my screen.
I have taken a picture, I will try to see if I can note any difference when the sun is down tonight.

 

Here is another picture, taken after dark.
Still not sure if I see any difference?

 

Resurrected. Looking good there, you'll notice a lack of the previously mentioned mesh effect. Thought I'd add my two cents on this, I have a Japanese 02 revision N64, and after performing the RGB mod, it had CSYNC on pin 3 right out of the box, no mod needed.

 

Yep, NUS-CPU-03 N64s and older have C-Sync already wired to the multi-out. NUS-CPU-04 units need a simple mod and anything afterwards needs a new DAC like Tim Worthington's N64RGB board.

Why Nintendo left the C-Sync line wired up and not the RGB lines on early boards is beyond me. Can anyone shed light on this insanity?

 

One more thing to add; as the OP has written, he has done the same RGB mod on his SNES Mini which is exactly what I did. I also performed the CSync mod as per the details on retrorgb.com, and I found that, whilst I did get a picture on the Framemeister, certain scenes on certain games were exhibiting sync problems and no amount of adjusting the sync level alleviated it. The most notable example was the character select screen on Street Fighter 2 Turbo; it would wobble and flicker uncontrollably. I ended up fixing this problem by soldering a 1.1K‎Ω resistor and a 220μF cap on the sync line on the SCART cable. I had the exact same issue with the N64, and as I use the same cable for both consoles, they both work beautifully now.

 

I would like to build a Scart-Cable for a JAP NUS-CPU-03 with a RGB-Amp.
I would build a cable like the NTSC SNES cable shown here to hookup to my Sony PVM:
http://members.optusnet.com.au/eviltim/gamescart/gamescart.htm#snes

Somehow I am a little bit confused about CSYNC.

Is there an easy way to check if there is already CSYNC on Pin 3 on the MultiAV?

 

As far as i'm aware, so long as you have the components on your board that are circled in red on this picture, you have csync.
This isn't my picture, but I circled the area that i'm talking about.

If someone know's an easier way, or if i'm barking up the wrong tree, then by all means, please correct me.