Skip to content

Instantly share code, notes, and snippets.

Last active January 25, 2023 15:12
  • Star 77 You must be signed in to star a gist
  • Fork 7 You must be signed in to fork a gist
Star You must be signed in to star a gist
What would you like to do?
AGB-001 Front/Backlight Mod Instructions

AGB-001 Front/Backlight Mod Instructions

AGB-001 Backlight Mod


  • AGB-001
  • ASS101 screen
  • Ribbon adapter

AGB-001 Models

You can tell the model by taking off the battery cover and looking at the motherboard model

32 vs 40 pin

  • 32 pin: 1st number is "1"
  • 40 pin: 1st number is "0"

AGS-101 Screen Types

You can tell the type by the ribbon circuitry or connector color (source)

  • A: uniform widths, white connector
  • AB/B: differing widths, brown connector

Ribbon Adapters

  • 32/40 pin: Must purchase one that matches your AGB-001 motherboard
  • Solderless: Will not be as bright unless you add a wire
  • Solder required: Must connect P1 to left leg of DA1
  • Switch: Allows switching between high/low through the battery compartment. Requires slight shell modification. Physical switch so it keeps setting across device reboots.
  • 5 level w/ key combo: Allows switching through 5 brightness levels with Select + L, but boots with lowest setting every time.

AGB-001 Model & AGS-101 Screen Pairing

  • 32 pin + Type-A: Perfect (source)
  • 32 pin + Type-AB: Washed out and dim (source)
  • 40 pin + Type-A: Washed out and bright (tested). Possibly connect 103 to GND to fix (source)
  • 40 pin + Type-AB: Perfect (tested)


See here


  • Remove rubber grommet and backing from front and back of AGS-101 screen or else it won't fit
  • Must modify shell to fit new screen
  • Can adjust screen using potentiometer through hole behind sticker on the back
  • If buying a new shell with hardware, use the hardware that came with the shell since the hardware might be different and the shell is designed for them

AGB-001 Frontlight Mod




  • AGB-001
  • AGS-001 screen
  • Ribbon adapter
Copy link

SAMGARTNER commented Feb 9, 2018

Can the backlight get damaged? Here is my case, I have an original 32 pin GBA with a AGS 101 display and the adapter with the p1 red wire. I plugged everything and soldered the red wire to the left pin of ad1, and I couldn't see anything, no backlight no picture, I then tried to plug the red wire into the S1 point in the front part of the board and I managed to see the picture but still no backlight. Do you guys have any idea of what might be happening?

The red wire definitely is doing something. When I put the red wire into S1 I can see some "contrast" changes using a flashlight but there is no backlight.

Copy link

I installed an aftermarket AGS-101 screen into a 40pin AGB console using an older/cheaper ribbon cable. The resulting picture quality was very washed out with horizontal interference lines. After following the steps outlined in this Reddit post (including leaving Q3 alone) the quality of the screen looks great.

Copy link

+1 to @qurao & @DanielBoa - I just did the modification you guys mentioned and... this is golden! Screen looks amazing now. I have 40 pin GBA + Type-A screen and did the mod described directly in the gist, until I got back here and discovered the mentioned Reddid post. @grantland - it would be really cool if you could edit your gist and attach the thread url. It is really working.

Copy link

I have the 40 pin screen, I bought a pre-soldered adapter, and I installed it as instructed, but the screen is just black. I was confused, so I plugged in my old screen back into it and it worked just fine, but for some reason when I plug the new screen in it does not show anything at all. There isn't even an indication that the screen is on. Please help.

Copy link

HDR commented Sep 6, 2018

It could be beneficial to add "Insulate cartridge reader pins with kapton tape" to the notes, a lot of users seem to be having issues with shorts due to the pins touching the back of the screen

Copy link

neo0910 commented Apr 23, 2019

Hello. I should to say something about "32 pin + Type-AB: Washed out and dim".
There are controller of brightness on the motherboard.

Copy link

neo0910 commented Apr 23, 2019

Copy link

neo0910 commented Apr 23, 2019

This is my 32-pin gba and AB screen (brown connector)

Copy link

Hey, maybe anyone can help me identify the problem?
here's how my screen looks like:
Have no experience with stuff like this whatsoever so I would appreciate all help I can get.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment