AGS-101 Voltage Regulator Connection Guide

AGS-101 Voltage Regulator Connection Guide

This tutorial is still a work in progress. Please, don't hesitate to reach out if you want to help with this guide.


Table of Content

  • Change Log
  • Introduction
  • Installation for Simple Ribbons
  • Installation for Ribbons with Switch

Change Log

[0.2.0] - 2017-05-16
0.1.0 was yanked due to recent discoveries with ribbons with switch.

  • Complete rewrite
  • Steps per ribbon types
  • New pictures

[0.1.0] - 2017-02-15 [YANKED]

  • Initial release


The following tutorial will guide you through the steps to install our voltage regulator inside your AGS-001 + AGS-101 LCD mod. If you are planing on using a ribbon with variable brightness switch, there will be couple extra steps to achieve your goal.

BennVenn's AGS-101 Voltage Regulators offer the best possible brightness for any AGS-101 mod, they are available from our shop here.

We assume you have basic soldering skills, that you know how to clean surfaces before soldering and that you already know how to do an AGB-101 mod. This guide will only instruct you on how to integrate the voltage regulator in your mod.

Other than the wires provided with the ribbons, we use 30 AWG Silicone-Cover Stranded-Core.

NOTE: that the information given here is provided to the best of our knowledge at the moment of writing and could change over time. Anything you might do is at your own risk and we can't be held responsible if things turns our bad on your end. Attempt at your own risk.

Installation for Simple Ribbons

1. Required material


2. Voltage Regulator Assembly

  1. Solder the red wire to the In terminal
  2. Solder the black wire to the Gnd terminal


3. AGB Board Preparation

The voltage regulator takes it's current straight from the batteries and bypasses the AGB's internal power supply. The In is taken from the batteries after the switch, that is the second pin of the switch (or third, if looking at your board in the oposite direction, like this picture) and Out to the battery's negative terminal

  1. Clean the circled areas;
  2. Apply soldering flux;
  3. Apply a reasonable amount solder to both terminals.


4. Voltage Regulator Installation

You are now ready to install the regulator to the depicted on the picture. Red wire goes to the pin's second terminal. Black to the battery's negative terminal.


5. Ribbon Adaptor Connection

We encourage you to solder up the ribbon's wire to the Out terminal of the voltage regulator before screwing the logic board back in the shell. That will allow you to test your work beforehand.

BUT, If you feel confident about this step, we found the best moment to solder up the ribbon's wire to the voltage regulator is after the board has been screwed back in place.


6. Finalization

To prevent damages and loose soldering due to movement, secure the voltage regulator inside a shrink tube. Then use electrical tape (rolled in O shape to expose glue all around it) to hold the regulator in place, above the capacitors.

Put some tape over the ribbon's wire to secure it in place as well (we use Kapton tape 1/4"). You might need to cut some material from the shell's back to avoid squeezing the voltage regulator's wires.

Close up the console and ...

7. Enjoy!

Installation for Ribbons with Switch

The steps to install the voltage regulator with a ribbon with switch is the same as an installation with a ribbon without a switch except that the ribbon and the 101 LCD needs to be modified.

This is not an easy thing to do, you might damage your LCD or your ribbon.


1. Required material

  • AGB board
  • AGS-101 LCD Screen
  • 32 pins or 40 pins Ribbon (with pre-soldered wire)
  • 1x 1.25" Red wire
  • 1x 1.25" Black wire
  • 1x 3" Red wire
  • 1x 0.5" Red wire
  • 1x 4.7 kOhm resistor (SMD)
  • Voltage Regulator
  • Shrink tube (included with the voltage regulator)
  • Electric tape


2. Voltage Regulator Assembly

Same as the Simple Ribbon instructions.


3. AGB Board Preparation

Same as the Simple Ribbon instructions.


4. Voltage Regulator Installation

Same as the Simple Ribbon instructions.


5. Ribbon Preparation

Due to the ribbon's particular design, soldering it's wire directly to the voltage regulator would end up powering the whole board with approximately 13.5v. Hooked-up as such would end up overheating the regulator. To prevent that, the ribbon has to be modified.

5a. Remove Ribbon Bridge

By removing this solder bridge, the switch becomes isolated from the rest of the circuit.

5b. Solder Output Wire

Use the left pad from the removed bridge to solder the 3 inch wire. Put the tape back over it after.

5c. Prepare the 4.7 kOhms Resistor

Solder the 0.5 inch wire to one end of the resistor.

5d. Prepare the Switch

Tape the ribbon to your workspace it will help a lot for it not to move during this meticulous step. Solder the other end of the resistor to top pin of the switch. Don't try too hard to get a perfect fit at first. Solder the other end of the wire to the far left pin of the switch.

Once the resistor and the wire are soldered in place, don't hesitate to reflow both end of the resistor while pressing softly on it, the goal is to get it that part as flat as possible otherwise it might break under the shell's pressure.


6. LCD Preparation

To avoid the voltage regulator's current from powering back the whole board, the backlight's + terminal (on the left) has to be isolated from the LCD's ribbon (below).

6a. Lift the Ribbon

Heat both pads simultaneously while carefully lifting up the backlight's power ribbon.

6b. Cover the Positive Tab

On the LCD, apply some tape over the positive tab, make sure you cover it completely to avoid any contact with the lifted backlight's ribbon.

6c. Solder Back the Negative Pad

Solder the backlight's negative tab (right) back to the LCD's ribbon. Only the negative terminals should be in contact. The positive terminal is now isolated.


7. Ribbon Adaptor Connection

Refer to the Simple Ribbon instructions for this step. The only difference is the extra wire that has to be soldered to the previously isolated positive terminal.


7. Finalization

Same as the Simple Ribbon instructions.


8. Enjoy!


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