TurboGrafx 16 Region switch/RGB/Turbo Amp module

A little bit of background on this module: I wanted to get RGB out of my TurboGrafx 16 but didn't want to plug an attachment (like the db GrafxBooster) behind the console. I wanted to use Voultar great RGB kit and ended up adding few more mods to this module along the way. Please read the notes below and feel free to reach out if you have any questions!

This module replace the existing TurboGrafx 16 RF module and allow you to combine some amazing mods available online:

- the region switch mod from Game-tech US: https://www.game-tech.us/product/tg-16-region-mod/)

- the TurboDuo RGB board and Duo DIN 8 connector from Voultar: https://voultar.com/index.php?route=product/product&product_id=53

- the stereo Audio Amplifier “Turbo Amp” from Mobius Strip Technologies: https://mobiusstriptechnologies.com/product/turbo-amp/
 
For my setup I use this 75 ohms multicore coax scart cable from retro access: https://retro-access.com/collections/pc-engine/products/scart-cable-for-rgb-enabled-pc-engine-duo-turbo-duo-core-grafx?variant=5197866369061

NOTE: Please check videos of the mods mentioned above on Youtube to make sure you are comfortable installing them before proceeding. 

I used two M3x12mm cap head screws with two M3 nuts to hold the new module in place. You will have to drill the existing two holes originally used for the RF module to fit the new M3x12mm screws.
You will need to cut some of the shielding to make room for the new module as well as cutting a larger opening for the DIN connector in order to plug a cable through the existing “ANT SWITCH” hole on the right side of the console.

Few comments/notes about each mod integration:

Region switch: after installing the region switch board, run the wires through the hole on the back of the new module (front being where the switch and DIN connector are) and solder it to the switch. You can then press the switch into place in the front hole. It is a pretty tight fit so you need to use a little bit of force there. 

8 pin DIN connector: get the connector aligned in the two side rails from the front and press it into place all the way in. It is a tight fit as well. 

Voultar RGB board: you can insert the RGB board on the top side of the new module and then proceed to solder the wires. I would recommend using some double sided tape under the board. Please see the pictures I took of my installation. You need to run (4) wires from the HuC6260 chip (R, G, B and C-sync) to the RGB board, as well as (2) wires from 5V sources and (2) wires from ground. There is a hole on the left side of the new module by the TurboGrafx 16 embossment that is there to internally route these (4) wires and have them come out on top by the RGB board. Solder 5V and ground wires to the RGB board respective pads and the other 5V and ground wires to the DIN connector legs. You will also need to solder (4) wires from the RGB board R/G/B/C-sync outputs to the DIN connector legs (Check online for DIN 8 pinout diagram for the rgb/sync/5V/ground/left & right audio, or Voultar RGB installation videos).

Turbo Amp:  you can insert the TurboAmp board on the right side of the new module and then proceed to solder the wires. I would recommend using some double sided tape under the board. Please see the pictures I took of my installation. you need to run (4) wires from: a 5V source, ground, audio left channel, audio right channel to the amp board. I found these 4 locations under the TurboGrafx 16 board and decided to run the 4 wires through 3 through holes that have been left unused after removing the RF module (I used 30 awg wire and was able to run 2 wires through one hole). There is an opening under the module above the 3 through holes (used by the old RF module) you can use to internally route these (4) wires and have them come out on the side by the TurboAmp board. Solder the (4) wires to the respective input pads (R IN, 5V, GND, L IN). Then solder wires from turboamp board left and right output pads to the DIN connector legs.

Hope this is helpful and not too confusing! Happy modding.

NOTE: this 3D model is designed to fit the 8 pin DIN female connector included in the Voultar RGB kit. Looking around on ebay I found this listing that seems to have a similar connector. I have not tested it myself so I cannot guarantee it will fit perfectly nor have the same quality as the one you will get from Voultar.

https://www.ebay.com/itm/174337413446?hash=item289751d146:g:kJMAAOSw6S9ddyAt&amdata=enc%3AAQAHAAAA4NzqIpG3NV3DL0bcJ3683rfnxQiBHMmap%2Fx%2F3ocWSTmWrtGeSMJnf9lWRa36eOYfDOy6Esj5tC0QM1QUEnodmJV3YgW92Gb6KEN9oJpk6fVdHGDOWHx7M%2BcS1bOAsc1u%2Bk4C1fIzLFU%2FGkKZDP8Iwf2mYgBEBMVNaU4Yg5IDWdAEvA1ze12t44D263%2BmyG2IRG8ZumrPMKmqtSqZqJq7H9SfVbmTjJ6feynvtJ9CJipKLNNhcm1BWDBG%2FNAk4kyJgCfoZFvpC%2FWeYxMSaRGGtIey57WirNJMs1TFIbG%2BIVAJ%7Ctkp%3ABFBM0sW4_8xh