Genesis:Triple Bypass Mod Model 3 VA2: Difference between revisions

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Tag: Reverted
(Moved Color Fix to main page)
Tag: Manual revert
Line 27: Line 27:
# Cut this trace: <br> [[File:Genesis3VA2 3BPv2 Jose6.jpg|400px]]
# Cut this trace: <br> [[File:Genesis3VA2 3BPv2 Jose6.jpg|400px]]
# The finished product should look like this (minus the orange wire on the Sync pad, which is unnecessary since CSYNC is routed to the DIN connector). See Sega CD Audio section below regarding the wires connected to cartridge connector. <br> [[File:Genesis3VA2 3BPv2 Jose5.jpg|400px]]
# The finished product should look like this (minus the orange wire on the Sync pad, which is unnecessary since CSYNC is routed to the DIN connector). See Sega CD Audio section below regarding the wires connected to cartridge connector. <br> [[File:Genesis3VA2 3BPv2 Jose5.jpg|400px]]
== Color Fix ==
As [https://www.retrorgb.com/fix-for-all-rgb-bypassed-sega-genesis.html documented here by Tianfeng], colors will be slightly incorrect if you used a regular bypass board that doesn't fully replicate the original circuit when you lift the RGB pins. To fix this, add a 5.6k resistor (three total) from the R, G, and B pads on the board to a 5V pad on the motherboard. Below is a before and after picture of the color steps in 240p Test Suite.
[[File:3BP Color Fix Before.png|600px|Before]] [[File:3BP Color Fix After.png|600px|After]]


== Sega CD Audio ==
== Sega CD Audio ==


If you are planning on using a Mega SD or Mega EverDrive PRO, you can easily restore Sega CD audio with the instructions found on [[Genesis:Restoring_CD_Audio_(Model_3)|this page]]
If you are planning on using a Mega SD or Mega EverDrive PRO, you can easily restore Sega CD audio with the instructions found on [[Genesis:Restoring_CD_Audio_(Model_3)|this page]]

Revision as of 02:03, 17 September 2022

This document will serve as a clear and step-by-step instruction on installing the 3BP on the Genesis Model 3, revision VA2.

Warnings

Please read the below warnings before proceeding!

  • This guide expects you to have a basic understanding of how to open up your Genesis Model 3 and to have basic soldering skills.
  • This mod permanently alters your device.
  • This mod should not be done by a beginner and is considered intermediate/advanced.
  • Make sure power is disconnected before proceeding.
  • After performing this mod you will no longer be able to use composite. You’ll be required to use RGB (or HD Retrovision) cables from this point forward.
  • Proceed at your own risk!

Tools Required

  • Flush cutters
  • Snips
  • Soldering iron
  • Solder
  • Flux
  • Solder wick
  • 28 or 30 AWG wire

Installation

$ Start by removing the shell from your console. Remove the 4 screws at the bottom then turn it back upright and lift off the top shell. Remove the screws on the metal shielding and lift the shield off. Next, remove the 2 screws on the sides of the cartridge slot. Now you can lift the motherboard out of the bottom half of the shell.

  1. Lift the RGB pins (pins 21, 22, and 23) from the CXA1645M chip.
    Genesis3VA2 3BPv2 Jose3.jpg
  2. Solder three wires from these points to the corresponding ones on the Triple Bypass board.
    Genesis3VA2 3BPv2 Jose4.png
  3. Remove the components and solder three wires to the Red, Green, and Blue pads and run them through the hole near the edge of the board and connect them to the Triple Bypass board.
    Genesis3VA2 3BPv2 Jose2.png
  4. Cut this trace:
    File:Genesis3VA2 3BPv2 Jose6.jpg
  5. The finished product should look like this (minus the orange wire on the Sync pad, which is unnecessary since CSYNC is routed to the DIN connector). See Sega CD Audio section below regarding the wires connected to cartridge connector.
    Genesis3VA2 3BPv2 Jose5.jpg

Sega CD Audio

If you are planning on using a Mega SD or Mega EverDrive PRO, you can easily restore Sega CD audio with the instructions found on this page

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