Author Topic: SNES Component Out Mod with S-ENC B Chip  (Read 344 times)

May 11, 2017, 03:37:11 AM
Read 344 times

ShoothimNow

  • Harriyoku Poo Poo Doo Doo
  • *********
  • Information Offline
  • Ultra Member
  • Posts: 2698
My sister found a SNES in a garbage and I have been dying to use my newly purchased soldering tools from the now closed Radioshack to attempt to mod this guy to use component.  My only dilemma.... I have no idea how to read this.

http://www.sega-16.com/forum/showthread.php?30401-SNES-YPbPr-Testing-Results



I have the BA6594AF (S-ENC B) Chip inside the system so I know I need to do a little more wiring, I just... have... no idea at all what to buy.  Hell, even if I had a MS Paint version schematic with what wire to go where (from the CAPs? / AMPs? / Resistors?) I would greatly appreciate it.

My last resort would be to bring this to Wiggy July 22 and tell him to take my money ::)

Thanks in advance guys


**edit**
When it says... say... 220uf 6.3v resistor.. can I use a 220uf 35v instead?
https://www.radioshack.com/products/radioshack-220uf-35v-20-radial-lead-electrolytic-capacitor

I just really need a breakdown of what I need =(
« Last Edit: May 11, 2017, 03:38:57 AM by ShoothimNow »

May 11, 2017, 05:39:11 PM
Reply #1

wiggy

  • The one.. the only... whatever
  • **
  • Information Offline
  • Maximum Volume Poster
  • Posts: 8241
  • Extra cheese please!
    • Rose Colored Gaming
That diagram says "seems to", "appears to", "enigma", and "more testing required."

Look elsewhere for the information.  Like maybe not on a Sega site  :P

I'd say check assembler, but it seems to be down for some reason  :-\

May 11, 2017, 06:23:13 PM
Reply #2

tylerbgood

  • Cover Machine
  • ******
  • Information Offline
  • Dedicated Member
  • Posts: 1016
Yeah I think I remember someone posting about this in the racketboy forums some time ago, if I recall correctly, this was all theoretical and the person didn't have an actual SNES to test this on. I may be thinking of something else, but I'm pretty sure that thread linked to sega-16 as well.

May 11, 2017, 06:25:06 PM
Reply #3

wiggy

  • The one.. the only... whatever
  • **
  • Information Offline
  • Maximum Volume Poster
  • Posts: 8241
  • Extra cheese please!
    • Rose Colored Gaming
It's been done, but the results are pretty far from perfect, and entirely NOT worthwhile IMO.

There's that one company who makes component cables for the SNES. Can't recall the website at the moment, but it's been posted here before, I do know that.

May 11, 2017, 07:44:10 PM
Reply #4

tylerbgood

  • Cover Machine
  • ******
  • Information Offline
  • Dedicated Member
  • Posts: 1016
I'm guessing you're talking about this: http://www.hdretrovision.com/snes/

I've got this and the Genesis version on my wishlist. They're currently developing a Saturn cable as well. Definitely seems like the best solution to me.
« Last Edit: May 11, 2017, 09:07:41 PM by tylerbgood »

May 11, 2017, 08:14:59 PM
Reply #5

wiggy

  • The one.. the only... whatever
  • **
  • Information Offline
  • Maximum Volume Poster
  • Posts: 8241
  • Extra cheese please!
    • Rose Colored Gaming

May 11, 2017, 08:16:11 PM
Reply #6

TDIRunner

  • All round awesome dude!
  • *
  • Information Offline
  • Post Whore
  • Posts: 5086
    • My MediaFire Account
I would go with the HDRetroVision cables as well, assuming you can find one.  :-\
Maybe, just once, someone will call me "sir" without adding, "you're making a scene."

My Raw Scans

May 11, 2017, 09:13:54 PM
Reply #7

ShoothimNow

  • Harriyoku Poo Poo Doo Doo
  • *********
  • Information Offline
  • Ultra Member
  • Posts: 2698
I would go with the HDRetroVision cables as well, assuming you can find one:-\
:-\

May 11, 2017, 10:08:50 PM
Reply #8

TDIRunner

  • All round awesome dude!
  • *
  • Information Offline
  • Post Whore
  • Posts: 5086
    • My MediaFire Account
I would go with the HDRetroVision cables as well, assuming you can find one:-\
:-\


Yeah, I was fortunate enough to back the Kickstarter which meant I got three cables (SMS, Genesis, SNES) and I got them a little cheaper than what they would sell for now.  It's without a doubt the Kickstarter I've benefited the most from.  I was tempted to sell the cables after seeing what they were going for (at least at launch), but I decided against it as I really wanted to use them.
Maybe, just once, someone will call me "sir" without adding, "you're making a scene."

My Raw Scans

May 25, 2017, 05:09:48 PM
Reply #9

tjsynkral

  • **
  • Information Offline
  • Jr. Member
  • Posts: 68
It's been done, but the results are pretty far from perfect, and entirely NOT worthwhile IMO.

There's that one company who makes component cables for the SNES. Can't recall the website at the moment, but it's been posted here before, I do know that.

If you're saying that, you haven't done it yourself.

I did it to my original S-ENC SNES and the results are fantastic. Better than RGB from the same model SNES (the early SNES's have very soft RGB).

I did not use the circuit in the OP with a transistor. I simply connected Pr and Pb with an inline resistor and capacitor on each one (I don't recall the values but I also didn't try multiple combinations so my values may not be the best). The Y is already available from the multi-out. I removed the RF encoder and put a TRRS jack in its place, and I use a YPrPb dongle that are easy to find online.

Note: The picture will still be 240p and look like garbage on LCD TVs. Use a CRT or XRGB, although I have seen a lot of sync problems with component on XRGB.

May 25, 2017, 06:54:11 PM
Reply #10

wiggy

  • The one.. the only... whatever
  • **
  • Information Offline
  • Maximum Volume Poster
  • Posts: 8241
  • Extra cheese please!
    • Rose Colored Gaming
I have not done one myself, but I've seen the results in person side-by-side with a 1chip hooked up via S-video and I still say it ain't worth it.

Though I have no idea which revision of the SNES it was and the exact method used to modify it.

May 25, 2017, 11:06:32 PM
Reply #11

wiggy

  • The one.. the only... whatever
  • **
  • Information Offline
  • Maximum Volume Poster
  • Posts: 8241
  • Extra cheese please!
    • Rose Colored Gaming
It's been done, but the results are pretty far from perfect, and entirely NOT worthwhile IMO.

There's that one company who makes component cables for the SNES. Can't recall the website at the moment, but it's been posted here before, I do know that.

If you're saying that, you haven't done it yourself.

I did it to my original S-ENC SNES and the results are fantastic. Better than RGB from the same model SNES (the early SNES's have very soft RGB).

I did not use the circuit in the OP with a transistor. I simply connected Pr and Pb with an inline resistor and capacitor on each one (I don't recall the values but I also didn't try multiple combinations so my values may not be the best). The Y is already available from the multi-out. I removed the RF encoder and put a TRRS jack in its place, and I use a YPrPb dongle that are easy to find online.

Note: The picture will still be 240p and look like garbage on LCD TVs. Use a CRT or XRGB, although I have seen a lot of sync problems with component on XRGB.

Can't sleep, so figured I'd just go ahead and mod a SNES with your method.  I think that was the quickest and dirtiest mod I've ever done.  I didn't make it pretty. Far from it in fact. But it works from a technical standpoint :P I'm even less impressed at this point. Colors look like poop, just as I recall and the image is maybe, possibly slightly sharper with the component mod, but nothing that is significant enough to offset the awful color output.

Ignore the red bars. I don't know why they appear in the photo, but they aren't visible in person.

Component GPM-2


S-video 1-chip-01
« Last Edit: May 25, 2017, 11:08:43 PM by wiggy »

May 25, 2017, 11:09:29 PM
Reply #12

ShoothimNow

  • Harriyoku Poo Poo Doo Doo
  • *********
  • Information Offline
  • Ultra Member
  • Posts: 2698
=(  Lame, thanks for trying man  :'(