SNES:SNES Jr DIY S-RGB Mod: Difference between revisions

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[[Category:RetroRGB Migration WIP]] Mitch1256
This guide shows you how to enable RGB output on a SNES Mini / Jr using its built-in RGB amp.
SNES Mini RGB Mod - Onboard S-RGB Amp


This guide shows you how to enable RGB output on a SNES Mini / Jr using its built-in RGB amp. If you'd like this mod performed for you, you can hire the following services:
== Materials Required ==


* The 4.5mm tool that opens the SNES
* Philips head screwdriver
* Soldering iron, solder, and flux
* 26-30 AWG wire
* Three 75 Ohm resistors, the lowest tolerance possible
* Three 1.2k resistors, the lowest tolerance possible


=== Modding Services: ===
== Installation ==
The mod is pretty easy, however soldering to the S-RGB chip can be challenging.


: [http://store.retrofixes.com Retrofixes SNES Mini RGB Mod - USA]
# Disassemble the console and remove the heatsink. Locate the S-RGB chip: <br> [[File:SNESMiniRGBModPage02.jpg]]
:  
# Solder four wires to the pins on the “S-RGB A” chip shown below. Use a soldering tip that's extremely thin, as well as very thin solder. Make sure to tin each pin and each wire before trying to solder them together: <br> [[File:SNESMiniRGBModPage03.jpg]]
: [http://voultar.com Voultar's SNES Mini RGB Mod - USA]
# It's recommended to use heatshrink tubing to keep the wires together and also protect them from touching any other components. Run the cables through the hole pictured below on the right: <br> [[File:SNESMiniRGBModPage04-1.jpg]]
# Carefully replace the heatsink. Run the wires under the heatsink, since there's enough room. The wires will touch the heatsink but won't be crushed <br> [[File:SNESMiniRGBModPage04.jpg]]
# Cut the wires to size, add the 75 Ohm resistors to the RGB lines, then solder them to the corresponding pins on the multi-out. <br> [[File:SNESMiniRGBModPage04-2.jpg]]


== Brightness Fix ==
=== Parts required: ===


: You'll need a few tools for this mod (more info on the tools can be found in [tools.html the tools section]):
It's recommended to add resistors to the RGB inputs that adjust the brightness. The mod will work without these resistors, but it's recommended you add them otherwise the picture will be too bright and cause ringing.
: Soldering skills! 
{{Note|Super Famicom Jr owners: Check brightness levels before doing this fix. Only some units need them.}}
: SNES RGB cable
: The [http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=9&pub=5575041517&toolid=10001&campid=5337251560&customid=&icep_uq=4.5MM+Game+Tool&icep_sellerId=&icep_ex_kw=&icep_sortBy=12&icep_catId=&icep_minPrice=&icep_maxPrice=&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg 4.5mm tool] that opens the SNES
: Philips head screwdriver
: Soldering iron / solder
: Thin gauge wire
: Flux (or a flux pen) will make installation easier, but is not necessary.
: Three 75 Ohm resistors, the lowest tolerance possible ([http://www.digikey.com/product-detail/en/MRS25000C7509FRP00/PPC75.0ZCT-ND/595092 also available from Digikey]):
: [http://www.mouser.com/ProductDetail/Vishay/MRS25000C7509FRP00 http://www.mouser.com/ProductDetail/Vishay/MRS25000C7509FRP00]
: Three 1.2k resistors, the lowest tolerance possible (not available from Digikey):
: [http://www.mouser.com/ProductDetail/KOA-Speer/MF1-4DCT52R1201F http://www.mouser.com/ProductDetail/KOA-Speer/MF1-4DCT52R1201F]


=== RGB Mod: ===
# Solder three 1.2k resistors between the three holes located directly under pin 10 of the cartridge port and a ground point. The picture below shows non-conductive tape covering the components under the resistor, however using heatshrink tubing is a better solution overall. <br> [[File:SNESMiniRGBModPage06.jpg]]
The mod is pretty easy, however soldering to the S-RGB chip can be extremely challenging.  Its usually recommended people use a pre-made amp for ease of installation, however if you're willing to solder to the small points this will work perfectly:
# Flip the motherboard over and trim the extra length of the leads off of the resistors, as they can short to something if not trimmed. <br> [[File:SNESMiniRGBShrinkTube.jpg]]
 
: Remove the 4 screws holding the plastic cover on using the 4.5mm tool. Then remove the 7 screws holding the motherboard in place (so, basically, just unbolt everything). Finally, unbolt the three screws holding the heatsink and find the S-RGB chip:
: [[File:SNESMiniRGBModPage02.jpg]]
:
: Solder four wires to the pins on the “S-RGB A” chip shown below. A few tips: These are extremely small pins and very difficult for people who aren't experienced at soldering to work on. Use a soldering tip that's extremely thin, as well as very thin solder. Make sure to "tin" each pin and each wire before trying to solder them together:
: [[File:SNESMiniRGBModPage03.jpg]]
:
: It's recommended to use heatshrink tubing to keep the wires together and also protect them from touching any other components. Then, run the cables through the hole pictured below on the right:
: [[File:SNESMiniRGBModPage04-1.jpg]]
:
: Then, carefully replace the heatsink. Run the wires under the heatsink, since there's enough room; They touch, but aren't being crushed:
: [[File:SNESMiniRGBModPage04.jpg]]
:
: Cut the wires to size, add the 75 Ohm resistors to the RGB lines, then solder them to the corresponding pins on the multi-out.
: [[File:SNESMiniRGBModPage04-2.jpg]]
:
: Next you need to add resistors to the RGB inputs that adjust the brightness.  The mod will work without these resistors, but it's recommended you add them (and it's really easy).  Simply solder three 1.2k resistors between the three holes located directly under pin 10 of the cartridge port and a ground point (flux is a big help for this).  The picture below shows non-conductive tape covering the components under the resistor, however using heatshrink tubing is a better solution overall.  AFTER YOU'RE DONE SOLDERING, FLIP THE MOTHERBOARD OVER AND '''MAKE SURE''' TO TRIM THE EXTRA LENGTH!!!!  It's very common to have these touch something on the other side, so make sure you check the length!   Click the picture below for a full-sized example:
: [[File:SNESMiniRGBModPage06.jpg]]
 
=== Results: ===
 
: That’s it! A pretty easy mod and the picture quality is amazing!!! Check out the difference from an average SNES 1 to a SNES Mini:
: [[File:SNS-CPU-GPM-02vsSNESMini.png]]

Latest revision as of 19:57, 31 July 2022

This guide shows you how to enable RGB output on a SNES Mini / Jr using its built-in RGB amp.

Materials Required

  • The 4.5mm tool that opens the SNES
  • Philips head screwdriver
  • Soldering iron, solder, and flux
  • 26-30 AWG wire
  • Three 75 Ohm resistors, the lowest tolerance possible
  • Three 1.2k resistors, the lowest tolerance possible

Installation

The mod is pretty easy, however soldering to the S-RGB chip can be challenging.

  1. Disassemble the console and remove the heatsink. Locate the S-RGB chip:
    SNESMiniRGBModPage02.jpg
  2. Solder four wires to the pins on the “S-RGB A” chip shown below. Use a soldering tip that's extremely thin, as well as very thin solder. Make sure to tin each pin and each wire before trying to solder them together:
    SNESMiniRGBModPage03.jpg
  3. It's recommended to use heatshrink tubing to keep the wires together and also protect them from touching any other components. Run the cables through the hole pictured below on the right:
    SNESMiniRGBModPage04-1.jpg
  4. Carefully replace the heatsink. Run the wires under the heatsink, since there's enough room. The wires will touch the heatsink but won't be crushed
    SNESMiniRGBModPage04.jpg
  5. Cut the wires to size, add the 75 Ohm resistors to the RGB lines, then solder them to the corresponding pins on the multi-out.
    SNESMiniRGBModPage04-2.jpg

Brightness Fix

It's recommended to add resistors to the RGB inputs that adjust the brightness. The mod will work without these resistors, but it's recommended you add them otherwise the picture will be too bright and cause ringing.

Exclamation-circle-fill.svgSuper Famicom Jr owners: Check brightness levels before doing this fix. Only some units need them.


  1. Solder three 1.2k resistors between the three holes located directly under pin 10 of the cartridge port and a ground point. The picture below shows non-conductive tape covering the components under the resistor, however using heatshrink tubing is a better solution overall.
    SNESMiniRGBModPage06.jpg
  2. Flip the motherboard over and trim the extra length of the leads off of the resistors, as they can short to something if not trimmed.
    SNESMiniRGBShrinkTube.jpg
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