Question about SNES RGB to VGA

Hello im in proccess of finishing up my launch SNES with the BA6592F encoder that outputs component video i cant find much info on wiring up the RGB to the vga socket i found the Csync pin which comes from pin 3 of the BA6592F and where to solder the pins for RGB but beyond that do i need resistors and caps inbetween the BA6592F chip to the VGA socket i dont want to damage my encoder as resoldering a replacement is a pain along with this SNES just being finished with SuperCIC/IGR

Thank You

 

Are you trying to do the component mod or are you trying to wire rgb to a vga port?

 

the component mod but using the vga port as the connector as i have a computer monitor/hdtv with vga

 

Follow this guide.


Also don't think your monitor/hdtv will output component with vga.
Your hdtv needs to support 240p component for it to even display.

 

hmm so component signal isnt compatible with a vga monitor circuit?

http://mikejmoffitt.com/wp/?p=74

saw this and is what gave me the idea for use of vga via component but there is little info given on the page in ragards to if cap/res are used or needed hmmm...

maybe im best off just installing YpBpR ports to SNES and callin it a day then? rather use VGA if it is possible and thank you for the schematic it gave me some info on what i was asking

 

On the site you linked he's just using a custom cable to output component.

If you want to see if your hdtv can output 240p component then hook up your snes to your tv and plug the composite cable to the green component port,if you get a black and white image than your tv supports it.

 

ah ok thank you

 

You could just get a SNES RGB SCART cable wired for C-Sync and use an external SCART to Component or HDMI converter. If you do that, make sure it is for your console's region (NTSC cables for US SNES and SFC and PAL for PAL SNES). The C-Sync pin on the multi-out for PAL consoles is 12V so you wouldn't get C-Sync on those.

 

would scart work goin from RGB/SCART to VGA i dont got SCART in my region just composite and VGA which is why i prefer VGA plus i rather stay away from HDMI unless i have to use it

 

Why not HDMI? It's digital so it's a much better picture. HDMI is the best until something surpasses it. The best upscaler for retro consoles, the Framemeister XRGB mini, outputs HDMI and it accepts RGBS natively.

There are SCART to VGA converters out there. SCART is directly compatible with VGA except for the Sync signals. VGA uses separate H-Sync and V-Sync whereas SCART uses a single Composite Sync (not the same as composite video). You can separate the C-Sync signal into H-Sync and V-Sync but since it's 15KHz RGB at 240p, it won't work on most VGA monitors, which require 31Khz RGBHV with a minimum resolution of 480p. A RGBS to VGA converter is required to convert 15KHz RGBS into 31KHz VGA. I've seen some online for around $90 on eBay.

Your other option could be RGB SCART to YPbPr Component converters. They cost about $40 on eBay. The problem with this is they don't pass through audio and they don't upscale, so it's 240p in and 240p out. A lot of HDTVs don't like 240p over component. To get audio, you will need a SCART audio extractor, which are quite cheap.

 

http://s280.photobucket.com/user/inazuma65/media/RGBbox.jpg.html

is this official cable ok to use on my NTSC system then run a scart to YpBpR with audio ? and in using this would any internal mods like soldering to the encoder be needed or un needed if the above is used like i mentioned RGB Scart to Scart to YpBpR with Audio ?

http://www.ebay.com/itm/SCART-TV-CA...181?pt=LH_DefaultDomain_3&hash=item2a27ccee35

 

That first cable is a JP-21 cable. It's the same as SCART but the pinout is different. You would need to either rewire it to the SCART standard or use a JP-21 to SCART adapter. The second cable looks like one of those cheap cables with a bunch of color bleeding. This is the one I use: http://www.ebay.com/itm/Super-Ninte...714?pt=LH_DefaultDomain_0&hash=item2edd7b9a0a

It's wired for C-Sync so don't use it on a PAL console if you ever get one. It will give you the best possible picture out of the SNES. If your SNES is a 1CHIP-03, C-Sync is disconnected from the multi-out and needs to be reconnected. Those SNES systems also have the best video output of all SNES consoles.

 

The SNES from my findings seems to actually have a better image quality with composite than RGB (unusually), so not sure if a composite > VGA adaptor would be worth considering, also easier.

 

That's... odd. How can RGBS be lower quality than composite video? Did you have the proper capacitors on the R, G, and B lines and did you have C-Sync wired up?

 

just found this cable looks promising with the on site examples but unsure

http://www.hdretrovision.com/snes/

as for composite to vga how would i go about doing that at first i thought just Csync was fine for VGA but with it needing 2 Sync lines H and V and being half the Mhz needed its more work or maybe a TRSS like aformentoined but how would i wire that up and with what resistors/caps needed if any still?

 

You would need 220uf caps on the r, g, and b lines plus c-sync would need to be separated into h-sync and v-sync. After all of that, you will need a VGA monitor compatible with 15Khz RGBHV. I hear the old amiga monitors work well for that.

 

hmmm i lack such a monitor all i have are off brand lcd VGA monitor atm

but this info is helpful tho i lack the monitor its good info for when i can get one i guess all i got left are doing the YpBpR mod or look into that retrovision cable hmmmm....

 

My understanding is C-Sync needs stripping to make H-Sync and V-Sync.

My suggestion would be to get a gadget similar to this:

http://www.ebay.co.uk/itm/PC-Laptop...871?pt=LH_DefaultDomain_3&hash=item1c47534947

...which is composite > VGA, that way if you are happy with the output you're done, if not then you can input composite to this box, cut the pins that output the RGB from the gadget on the VGA port, and connect those wires to the RGB output from the SNES - then you'll probably be left with the best VGA output from a SNES you will get. You will also probably need to connect a wire from ground from the SNES console to the gadget too (if you don't get an image otherwise).

That's how I would do it.

 

It probably won't work then.

Why not wire C-Sync to composite video instead? A lot of converters can accept C-Sync as composite video.

 

thats a good idea