Related Manuals for Gamebox GGDH
Summary of Contents for Gamebox GGDH
- Page 1 EXPERT Installation & Assembly Guide For VA1 models or any Dual ASIC Game Gear A PRODUCT OF Gamebox ©2023 (Document Revision 10) 3.24.23...
- Page 2 Is a product of Gamebox Systems LLC. https://www.gamebox.systems Our Socials Twitter Instagram @GameboxSystems instagram.com/gamebox.systems @PostmanMods instagram.com/postmanmods @Nobblesnozzles instagram.com/nobble64 Join the community discord.gg/ff9ctaU ™...
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Page 3: Legal Disclaimer
Chemicals associated with some of these processes are quite toxic and should be handled with care and adult supervision. Results may vary. “GGHD”, “Gamebox”, “Gamebox Sys- tems”, “gamebox.systems”, its associated internet domains, and the associated logos in this document are trade- marks(™) of Gamebox... - Page 4 PART 1: Game Gear Recap & Functionality Test STEP 1 Remove the 6 phillips screws and 1 gamebit screw holding the two halfs of the shell together and carefully open up the Game Gear. Page 4...
- Page 5 PART 1: Game Gear Recap & Functionality Test STEP 2 Ensure your Game Gear is compatible with this modification by finding a silkscreen that says “VA1” when you open the case. If you see “VA1”, continue to step 3. All Dual ASIC models of Game Gear are compatible with this mod.
- Page 6 PART 1: Game Gear Recap & Functionality Test STEP 3 NOTE: If a recap has been performed and the system is verified 100% working, skip step 3 and move ahead to STEP 5 of PART 1. Remove cables from power and audio PCBs. Use a tooth brush or Q-tip with isopropyl alcohol or deoxit to clean any corrosion off the Game Gear motherboard.
- Page 7 PART 1: Game Gear Recap & Functionality Test STEP 3(continued) Remove all capacitors on the back of the motherboard and replace all capacitors on the motherboard and the power PCB. For a capacitor map, go to https://wiki.console5.com/wiki/Game_Gear Find your motherboard and power board revisions and follow the diagrams to recap your PCBs. Audio PCB does not need a recap.
- Page 8 PART 1: Game Gear Recap & Functionality Test STEP 4 Reconnect the power PCB to the motherboard and close the Game Gear. Connect a power source (wall adapter or 6x AA batteries), plug in a game, and test the console. Ensure the console powers on and reads the game.
- Page 9 PART 2: Game Gear Motherboard Preparation STEP 5(a) For Dual ASIC Models Remove the circled componants. Page 9...
- Page 10 PART 2: Game Gear Motherboard Preparation STEP 5(b) For Single ASIC Models Remove the circled componants. Page 10...
- Page 11 PART 2: Game Gear Motherboard Preparation STEP 5(c) For Single ASIC Models Remove resistor R56 Page 11...
- Page 12 PART 2: Game Gear Motherboard Preparation STEP 6 Remove the reflective shield. Desolder the points in the red circles and remove the CFL tube and the fuses. NOTE: Solder must be removed for the GGHD to sit flat on the motherboard. Page 12...
- Page 13 PART 2: Game Gear Motherboard Preparation STEP 7 Remove tape below the cartridge connector. Remove the screen from the motherboard by applying GENTLE but firm pressure upward and drag soldering the screen pin contacts. The screen cable will lift cleanly from the contacts one at a time when drag soldering with correct pressure applied.
- Page 14 PART 2: Game Gear Motherboard Preparation STEP 8(For Single ASIC Install) When doing a SINGLE ASIC installation replace each of the circled resistors with 4 solder bridges. Dual ASIC installations can ignore this step. Page 14...
- Page 15 PART 3: GGHD PCB Installation STEP 9 Place the GGHD PCB on the Game Gear motherboard aligning the cartridge 16 connector pins to the solder holes on GGHD as shown. Slide GGHD down as far as possible to make the castellated edges as close as possible to the screen pins on the Game Gear motherboard.
- Page 16 PART 3: GGHD PCB Installation STEP 10 Before moving to step 11, take a moment to ensure the GGHD PCB is sitting as close as possible to the Game Gear motherboard. If there are any gaps caused by excess solder on the screen connector pins or the solder points shown in step 6, remove the solder before continuing.
- Page 17 PART 3: GGHD PCB Installation STEP 12 Solder to the anchor points circled. Apply a generous amount of solder first, then pinch the 2 PCBS together while applying the soldering iron to the anchor points again to ensure the PCBs are as close as possible. Page 17...
- Page 18 PART 4: Wiring Controls And Sense Signals To GGHD STEP 13(a) For Dual ASIC Models NOTE: Unless specified, pad labels on the Game Gear motherbaord are the same on Single and Dual ASIC Motherboards. Location may vary slightly. Solder GG Clock to either resistor pad circled in red. NOTE: Keep this particular wire as short as possible! A long wire may cause graphical artifacting.
- Page 19 PART 4: Wiring Controls And Sense Signals To GGHD STEP 13(b) For Single ASIC Models NOTE: Unless specified, pad labels on the Game Gear motherbaord are the same on Single and Dual ASIC Motherboards. Location may vary slightly. Solder “GG Clock” to either of the points circled in red. NOTE: If graphical artifacting or distortions occur then refer to the troubleshooting section at the end of this document about adjusting the length of this wire.
- Page 20 PART 4: Wiring Controls And Sense Signals To GGHD STEP 14(a) For Dual ASIC Models T10 Location Page 20...
- Page 21 PART 4: Wiring Controls And Sense Signals To GGHD STEP 14(b) For Single ASIC Models T10 Location Page 21...
- Page 22 PART 4: Wiring Controls And Sense Signals To GGHD STEP 15 Wire M3, M4, and M5 to the corresponding pads. The example(above) shows a Single ASIC motherboard. Page 22...
- Page 23 PART 4: Wiring Controls And Sense Signals To GGHD STEP 16 Wire the following points: • START -> M16 • B -> M14 • A -> M15 Page 23...
- Page 24 PART 4: Wiring Controls And Sense Signals To GGHD STEP 17 Wire the following points • Right Audio -> M41 • Left Audio -> M42 • UP -> M10 • RIGHT-> M13 • LEFT -> M12 • DOWN -> M11 Page 24...
- Page 25 PART 4: Wiring Controls And Sense Signals To GGHD STEP 18 Using a needle nose pliers, flatten the side tabs on CN2 (expansion port) Page 25...
- Page 26 PART 5: GGHD Final Assembly STEP 19 Using a needle nose pliers, remove the bolts and the metal shroud on the controller connector. Connect to GGHD as shown. NOTE: DO NOT use connector J3! Page 26...
- Page 27 PART 5: GGHD Final Assembly STEP 20 ORIGINAL CARTRIDGE CASE SCREWS Insert power button plunger into the recess to the right of the controller PCB. Place controller PCB in the front of the bottom case followed by the Game Gear motherboard. Align screw holes and assembly will drop into place.
- Page 28 PART 5: GGHD Final Assembly STEP 21 Place bracket as shown controller port first and align controller port mounting holes with front two holes of bracket. Place top case on top of the bracket for final step of assembly. Page 28...
- Page 29 PART 5: GGHD Final Assembly STEP 22 Flip console over to the bottom of the consolizer. Place an M3 screw into one of the two front holes. Adjust controller PCB such that the screw goes through to the threaded insert and fasten. Fasten the remaining 3 M3 screws.
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Page 30: Troubleshooting
Troubleshooting PROBLEM: Artifacting or general picture distortions: ARTIFACTING EXTREME DISTORTION CAUSE: A possible difference in the original Game Gears’ manufacture may result in some consoles having a different clock impedance/phase shift. SOLUTION: Changing the length of the wire connecting the GGHD to the Game Gears’ clock point, (As shown on Page 19) may fix this issue. - Page 31 Troubleshooting PROBLEM: “Rainbow Screen of Death”: RSOD CAUSE: Scenario A: Incorrect/poorly connected wiring to pins M3, M4, or M5(As shown on page 22.) Scenario B: H-Sync Or V-Sync may not be fully connected at the castellated edge. Scenario C: Dirty or damaged pins on the game gear cartridge or the cartridge connector SOLUTION: Scenario A: Check your connections on these lines.