Game Boy Advance¶

Nintendo's 32-bit handheld (2001, AGB), GB/GBC backward-compatible. Its stock Achilles' heel: a very dark reflective screen → the IPS screen mod is almost unavoidable. Available as the SP (AGS-001 frontlit / AGS-101 backlit) and Micro.

Identification¶

Field	Value
Manufacturer	Nintendo
Releases	AGB 2001 · SP (AGS-001/101) 2003 · Micro 2005
CPU	ARM7TDMI @ 16.78 MHz (+ a GB core for backward-compat)
Screen	AGB reflective (dark); SP frontlit then backlit (AGS-101)
Backward-compat	GB / GBC

Architecture (detail)¶

Block	Chip / value	Notes
CPU	ARM7TDMI @ 16.78 MHz	+ a Sharp LR35902 (GB) core for backward-compat
LCD	240×160, 15-bit (32768 colours)	AGB reflective (dark) — hence the IPS mod
Sound	4 GB channels + 2 PCM channels (Direct Sound) via DMA
RAM	IWRAM 32 KB (fast, on-chip) + EWRAM 256 KB + VRAM 96 KB
Media	Cartridge (up to 32 MB) + SRAM / Flash / EEPROM save

Video: tiled modes 0-2 (up to 4 layers, incl. affine rotation/scaling on BG2/3) + bitmap modes 3-5; 128 sprites (with hardware rotation/zoom). The GB core (LR35902) is only active in backward-compat (the ARM is halted).

Models & backward-compatibility¶

Model	Year	Screen	GB/GBC compat
AGB-001	2001	reflective (dark)	✅
SP AGS-001	2003	frontlit (clamshell, Li battery)	✅
SP AGS-101	2005	backlit (the best official screen)	✅
Micro	2005	backlit, tiny, swappable faceplates	❌ (GBA only)

Board revisions — ⚠️ 32-pin vs 40-pin screen ✅¶

Check this BEFORE ordering a screen kit

The AGB-001 comes with two incompatible LCD connectors:

AGB-CPU-01 to -04 → 40-pin connector;
AGB-CPU-10 (from 2002) → 32-pin connector.

Ordering the wrong IPS kit means an unusable kit. Nintendo skipped ahead from revision -04 to -10: there is no -05 through -09.

Reading it without disassembly: as on earlier Game Boy systems, the revision number is visible inside the battery compartment, through the hole for the battery cover clip. You will read "01", "02", "03" or "04" → 40-pin, and "10" → 32-pin.

Bonus: 32-pin systems consume less current and therefore have better battery life than 40-pin ones. (Source: ConsoleMods, CC-BY-SA.)

Model	Revisions	What it changes
AGB-001	AGB-CPU-01 → -04	Minor layout changes only, with no impact on functionality or modifications. CPU-01 and -02 tend to carry the original CPU version; later boards the "A" revision CPU. 40-pin screen.
AGB-001	AGB-CPU-10 (2002)	Different LCD interface from all previous revisions: 32-pin. Lower current draw → better battery life.
SP AGS-001	several, incl. AGS-CPU-30	Revisions largely identical; the last one (AGS-CPU-30) consolidates some ICs into the Mitsumi PM B3 chip.
SP AGS-101	AGT-CPU-01 (only one)	⚠️ Not interchangeable with AGS-001 boards (and vice versa) due to the screen lighting differences.

Telling AGS-001 and AGS-101 apart without a label

AGS-001 = frontlit screen, with a small button under the screen on the main body that turns the lighting on and off.
AGS-101 = backlit and more vibrant; the button only dims the screen and never switches the backlight off.
The visual tell: with the system turned off, the 101's screen has a slight grey/green tinge. That is how to identify it when the model number label cannot be seen.
The AGS-101 was never sold in Japan.

Hardware quirks worth knowing

AGB-001: no AC adapter input — power supplies must feed through the battery contacts. Dual power LED: green in normal operation, red when the batteries are running low. The last Game Boy to take alkaline batteries (2 × AA). No IR transceiver (unlike the GBC).
SP: rechargeable, user-replaceable Li-ion battery; the headphone jack is consolidated into the proprietary charging connector → a special adapter is required for headphones. D-pad and face buttons use metal tact switches instead of rubber membranes.
Micro (OXY-001): link and charging ports combined into a single proprietary connector (special cables or an adapter needed), but the 3.5 mm headphone jack returns. No GB/GBC compatibility at all — GBA games only.

"Hardware" cartridges & links¶

Built-in sensors: Boktai (a real solar sensor), WarioWare: Twisted! (gyro + rumble), Yoshi Topsy-Turvy (tilt), Drill Dozer (rumble) — the hardware is in the cartridge.
e-Reader: an accessory that scans "dot-code" cards (mini-games, Mario levels, e-Cards).
Wireless Adapter: bundled with Pokémon FireRed/LeafGreen and Emerald.
Links: link cable (multi, single-cartridge play); GBA↔GameCube (controller/2nd screen, Game Boy Player).

Common faults¶

Symptom	Likely cause	Lead
Unreadable screen without strong light	Reflective LCD (AGB)	IPS screen (mod)
Weak / absent sound	Audio capacitors, speaker	Recap; speaker
Hinge / screen (SP)	Ribbon, hinge	Replace ribbon/hinge
Battery contact corrosion	Leaked batteries	Clean contacts

Step-by-step disassembly procedures ✅¶

10 procedures transcribed from the iFixit guides. Each gives the difficulty and the estimated time — enough to know what you are getting into before opening the machine.

Procedure	Difficulty	Time
Installing Nintendo Game Boy Advance Back Panel	Easy	1 - 2 minutes
Installing Nintendo Game Boy Advance Battery	Very easy	< 1 minute
Installing Nintendo Game Boy Advance Buttons	Moderate	10 to 15 minutes
Installing Nintendo Game Boy Advance Buttons and LCD Screen	Moderate	10 - 20 minutes
Installing Nintendo Game Boy Advance LCD Screen	Difficult	20 - 30 minutes
Installing Nintendo Game Boy Advance Logic Board	Moderate	15 to 20 min
Installing Nintendo Game Boy Advance On/Off Switch	Very easy	—
Installing Nintendo Game Boy Advance Shoulder Button and Side Panels	Moderate	5 - 10 minutes
Installing Nintendo Game Boy Advance Speakers	Very difficult	30 to 40 minutes
Cleaning sticky buttons	Very easy	5 minutes

Installing Nintendo Game Boy Advance Back Panel

Remove the six back panel screws using a Tri-wing Screwdriver.
Remove bottom back panel screw with a Phillips #1 screw driver.

Installing Nintendo Game Boy Advance Battery

Take the battery cover off by releasing the locking tab and hinging the cover away.

Installing Nintendo Game Boy Advance Buttons

Remove the rubber button pads from their pockets. Remove the plastic buttons and the D-pad from beneath the rubber pads with tweezers or by hand.

Installing Nintendo Game Boy Advance Buttons and LCD Screen

Remove the three screws on the circuit board with a Phillips #1 screw driver.

Installing Nintendo Game Boy Advance LCD Screen

Using the tweezers, gently pull the ribbon from the logic board.

Installing Nintendo Game Boy Advance Logic Board

Using the tweezers, gently pull the ribbon from the logic board.

Installing Nintendo Game Boy Advance On/Off Switch

Remove the gray On/Off Switch by pulling up and away from the unit. Replace with another switch if necessary.

Installing Nintendo Game Boy Advance Shoulder Button and Side Panels

Remove left and right triggers by lifting and pulling them away from the system. Do the same for side panels For finicky or jammed triggers only. Adjust and correct triggers and reassemble. Most jammed triggers are caused by buttons misplaced or jammed in its enclosure.

Installing Nintendo Game Boy Advance Speakers

Using the tweezers, gently pull the ribbon from the logic board.

Cleaning sticky buttons

Use a slightly damp toothbrush to scrape in between the desired sticky buttons. Make sure toothbrush is not to the point of dripping water when scraping.

Source and licence

iFixit guides, licensed Creative Commons BY-NC-SA 3.0 — reuse permitted with attribution, non-commercial use and share-alike. Of all the documentation gathered in this wiki, this is the only material under an explicit licence: the manufacturer manuals have none. The step photos accompanying these guides are kept in the original archive (manuels/).

Popular mods — what to buy, where, how¶

Models

AGB-001 (original GBA, unlit screen → the IPS transforms it) vs AGS-101 (GBA SP with an already-backlit screen). Tooling: tri-wing (Y) + Phillips screwdrivers, fine iron. Soldering: 🟢 · 🟡 · 🟠 · 🔴.

Backlit IPS screen — THE mod (AGB-001)¶

Replaces the dim stock screen with a bright IPS (often brightness + adjustable palettes). Kits from FunnyPlaying (IPS v2/v3), Hispeedido. Where: FunnyPlaying, Stone Age Gamer, RetroModding…
Install 🟡: open, swap panel + flex; recent kits are "drop-in" (little/no cutting) and are driven by touch/button; use a fitted shell if the screen is larger. → Handheld IPS page.
⚠️ BEFORE BUYING: check whether the system has a 32-pin or 40-pin screen — the kits are not interchangeable. Readable without disassembly in the battery compartment → Board revisions.
Some replacement panels also output video (micro-HDMI, or composite through the Link port) → Video output.

Audio / power¶

Prosound (clean line-out) + audio recap; USB-C / rechargeable internal battery.

Library — flashcart¶

EZ-Flash Omega (Definitive Edition) or EverDrive-GBA X5 (Krikzz) — microSD, plug-and-play 🟢, handle save types + RTC (Pokémon). Large homebrew scene; very mature emulation (mGBA).

Cartridge RTC battery: the trap that breaks saves ✅¶

A handful of games carry a battery that keeps a real-time clock (RTC) running inside the cartridge. The problem is not the battery itself:

Replacing the battery is not enough — and it breaks existing saves

When the battery dies, the RTC resets to 01/01/2000 00:00:00. And when you replace it, the game will not let you set the current time: the RTC stays wrong, which breaks existing game saves. You can start a new game… or set the clock with a homebrew tool and rescue your old saves. (Source: ConsoleMods, CC-BY-SA.)

Games affected: Pokémon Ruby, Pokémon Sapphire, Pokémon Emerald, Boktai: The Sun Is in Your Hand, Boktai 2: Solar Boy Django, Boktai 3: Sabata's Counterattack.

Fixing the RTC with a GBAFixing the RTC with a DS

Get rtcread.zip and extract the .gba ROM from it.
Copy the ROM to your flash cart, plug it into the GBA and run it.
With the system still running, remove the flash cart and insert the game cart.
Start = read the clock data.
Select = edit the clock with the D-pad. ⚠️ Do not set an invalid date.
Start = save.

Get rtcread-ds.zip and extract the .nds ROM from it.
Copy the ROM to your flash card, insert both the flash card AND the game cart into the DS, then run RTC Read from the flash card.
Start = read the clock data.
Select = edit the clock with the D-pad. ⚠️ No invalid dates.
Start = save.

The detail that matters

On GBA, the flash cart → game cart swap happens with the system powered on (the program is already in RAM). On DS there is no need: both slots are used at once. Modern flash carts (EZ-Flash Omega, EverDrive-GBA) otherwise emulate the RTC for their own saves.

Video output to a TV / monitor ✅¶

The GBA displays 240×160 at a non-standard frequency (~59 Hz). To show it on a TV or a monitor it must be converted to a standard resolution and matching refresh rate — which often results in frame stutter and windowed gameplay. The best solutions have no stutter and no tearing, but won't always fill the screen top-to-bottom.

Replacement panels with video out¶

Panel	Output type	Screen type	Size
"One Chip" DSi TFT HDMI	micro-HDMI	TFT	same as stock
"OneChip" IPS TV Version	composite through the Link port	IPS	same
"OneChip" 9380 IPS	composite through the Link port	IPS	larger
HDMI Out Board	micro-HDMI	variable	variable

The HDMI Out Board is not a panel: it is an HDMI board installed alongside whatever screen is already fitted. For the GBA SP there is only one panel with video out: the "OneChip" 9380 IPS (larger than the stock screen, composite output).

Consolizers (GBA motherboard + FPGA HDMI)¶

FPGA boards with HDMI out that connect to a GBA motherboard: real hardware on a TV, played with a controller. All are DIY kits — you must supply the motherboard.

Consolizer	Soldering required	Controller	Pre-assembled available
GameBox GBHD Advance	yes	SNES	✅
gbaHD (open source)	yes	SNES	❌
IntecGaming GBA HDMI	no	SNES, Bluetooth	❌
Game-Tech GBA (FaceHugger / full case variants)	yes	SNES	✅

Without touching the console¶

Game Boy Player (GameCube): plays GB / GBC / GBA cartridges through the GameCube's TV output. The official disc only outputs 480i/480p → the homebrew Game Boy Interface (GBI) is much better, and Swiss can force 240p. → see GameCube and the Swiss / GC Loader page.
With no console mods at all: keep the official boot disc and downscale 480p to 240p with an Extron Emotia or similar. Example chain: GC/GBP component cables → component-to-VGA converter → Extron Emotia → RGB monitor. The result looks very good (240p scanlines), but it is complicated and expensive — not recommended unless you already own the equipment.
MiSTer FPGA: can't read original carts, but it is a lag-free option with RGB, VGA and HDMI up to 1440p. The most output flexibility — at the cost of original hardware and accessories.
Wii U Virtual Console: software emulation (so some lag) but excellent.
- On CRT: set to 480p widescreen, GBA games run "pixel perfect" and fill the screen — the GBA's 160 vertical lines multiply exactly by 4 to make 640.
- On 1080p: as GBA games are 3:2, two aspect-correct modes — 1620×1080 by default (fills top to bottom, pillar boxes, ×6.75) or 1440×960 as an integer ×6 scale (black bars on all sides, but a sharper picture).
- Screen smoothing is available in the options menu or via the right thumbstick.

Region¶

None: the whole Game Boy line, including GBA / SP / Micro, is region free — see Game Boy § Region.

Capacitor list (per reference) ✅¶

Source: Console5 TechWiki. Game Boy Advance (AGB-001) — 4 caps (references in CP):

Ref	µF	V
CP1	100	4
CP2	100	6
CP3	470	6
CP4	100	4

Photos / assets¶

(To add: AGB board, screen, audio area.)

Advanced repair

Screen (AGS-101 / IPS mods, backlight), cartridge contacts, speaker. Methods: PCB fault-finding · Traces & vias · Recap.

Sources & attribution¶

Wikipedia — Game Boy Advance — CC-BY-SA — https://en.wikipedia.org/wiki/Game_Boy_Advance
Console5 TechWiki — Game Boy Advance (recap BOM per reference) — https://wiki.console5.com/wiki/Game_Boy_Advance
ConsoleMods Wiki — Game Boy Advance Model Differences — CC-BY-SA — AGB-CPU-01→04 (40-pin) vs AGB-CPU-10 (32-pin), reading the revision through the battery cover clip hole, AGS-001 vs AGS-101 (grey/green tell), AGT-CPU-01 not interchangeable, Micro specifics — https://consolemods.org/wiki/GBA:Model_Differences
ConsoleMods Wiki — Real Time Clock (RTC) Fix — CC-BY-SA — games affected, rtcread procedures on GBA and DS — https://consolemods.org/wiki/GBA:Real_Time_Clock_(RTC)_Fix
ConsoleMods Wiki — Video Output Notes — CC-BY-SA — panels with video out, consolizers, Game Boy Player/GBI/Swiss, Extron Emotia, MiSTer, Wii U scaling modes — https://consolemods.org/wiki/GBA:Video_Output_Notes
ConsoleMods Wiki — Region Information — CC-BY-SA — the Game Boy line (GBA included) is region free — https://consolemods.org/wiki/Game_Boy:Region_Information

What we did not transcribe (and why)

On the GBA side, the ConsoleMods pages Funny Playing IPS LCD, TV-Out IPS Kit, Screen Replacement, Power Fuse Replacement, USB C Port and Voltage Regulator Board Upgrade are empty to this day (red links). There is therefore no written procedure to bring home for those mods: they are named here (products and principle), with no invented steps.

Image:

gba-board.jpg — gekkio (Joonas Javanainen), CC BY 4.0 — https://commons.wikimedia.org/wiki/File:Game_Boy_Advance_motherboard_front.jpg

Review & corrections

How this space is used

Spotted a wrong value, an outdated procedure, a chip reference that does not match your board? Say so here, with what you observed (model, board revision, serial number, measurement). Every report is cross-checked against a source before anything changes — an unverifiable correction is published as “reported by …, not cross-checked” rather than silently applied.

Reading is open to everyone; posting requires signing in with Discord. Reports from the wiki's declared reviewers are handled first; anyone else's are read too, but go through a human before anything is changed.