SNES Jr RGB Amp Kit Installation v2

Please take proper safety precautions when dealing with electronics and soldering. Have proper ventilation and a clean work area. Research basic soldering technique if in doubt.  I cannot be held responsible for any damages that could occur to you or your equipment while following  the procedures present on this Website.  

Getting Started:
What you need:
- Basic soldering skills!

- The 4.5mm tool that opens the SNES (available in the store)
- Philips head screwdriver.
- Soldering iron & solder.
- Wire Strippers
- Small piece of electrical tape.
- Small wire snipers.

Read this Awesome "Soldering is Easy – Comic" for Basic 101s of soldering click here.

RGB Kit Amp Pads:

Y= Luma (only active on Svideo enabled amps)
C= Chroma (only active on Svideo enabled amps)

Before doing anything unplug the consoles & turn the power switch "ON"  This will discharge the internal capacitors. 

Start by removing all 4.5 bit screws from the bottom side of console.

Next Remove all visible screws from the motherboard. Make note of different screws sizes, the larger silver screws secure the game slot and rear multiport.  All other screws surround the board.

Now it is time to prep the RetroFixes RGB amp.  To insure 100% reliability I prefer adding a piece of electrical tape to the rear of the RGB amp. Do not skip this step!  (example photo from different board design)

Locate these areas on bottom of motherboard.

Before placing the RGB kit on the motherboard: Make sure to trim these pins and remove the solder glob (if required)

Note:  1 out 25 SNES consoles (my experience) come from the factory with the two ground pins soldered together.  If your console has this extra solder remove it before placing the amp into place. You can either snip the solder away with snipers or remove the solder with a desoldering hand pump

Next, solder the amp to the multiout pins.  Simply solder all the 12 pins as shown below.

Next, locate this spot on the motherboard:
This location is very important, study it closely before soldering. CS, Red , Green, Blue are found here.

Note: I ship kits with 26awg wire. Some photos here display smaller wire, disregard this difference.  Measure and cut the 26awg wires to proper length and solder them to the corresponding pads on the Amp. Strip the wire and slightly twist the strands. Next add a small amount of solder to wire tip. This is called "tinning" your wire. Very important step and makes you installation cleaner and more reliable.

Example of wires soldered to amp. Make your wires short as possible. Honestly my wires could be a tad shorter in the example pic.

For Svideo install: (C & Y Pads)

Locate the SNES  "S-RGB" chip located on top near the Heat-shield.  Removing the Heat-shield is necessary and it is held down with 3 screws.

Locate IC Pins 12, 17 & on the chip. Use the photo as a guide.  

Pin17 = Y (luma)
Pin 12 = C (chroma)

Make sure to guide your wires to the left side (shortest path) and wrap around and under to the RGB amp.

Here is another picture clearly showing IC pins. Soldering wires to these small IC legs requires some skill.  Add a small amount of solder to the legs and wire before trying to soldering into place.

Notes about the JP jumper on the amp kit:   I will add detailed updates about this jumper in the future. The Jumper when closed (soldered) sends TTL sync to the multi-out. You may need TTL for certain scart cable builds.  Leave JP unsoldered for most applications

That's the basics of installing RGB amps. Make sure to reassemble to heatshield and all the SNES motherboard screws.  Test and Enjoy.  If you have any issues we are here to help.


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