Philips Videopac+ G7400 RGB/Composite Hack – Repair – Recap

I have received a gift from my dear friend Andrea Pierdomenico a Videopac+ G7400 console with the BASIC Microsoft module and some cartridges that go into my collection of videopac cartridges.

This console running smoothly but with some problems.

• Power button not working (as usual)
• A capacitor of the power supply section has a broken leg.

The works that have been made:

• Replacing the power switch with a compatible one.
• Full recap of the power supply section.
• RGB/Composite HACK for unparalleled video output.
• RF Module Removal.
• Shifted the 220V Power Cable into the hole of the RF antenna.
• Two video cables (Composite-Audio / RGB-Audio)

Videopac+ G7400 RGB/Composite Hack (components that need to be added):

All the works that have been made are documented in the photos below:

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source: g7400 guide rgb mod

Texas Instruments Magic Wand Speak & Learn Fixed

Defect:

• Doesn’t always turn on.The power button doesnt work properly.
• Battery acid leak.

Fix:

• Cleaning the Battery acid leak in the battery compartment.
• Cleaning the strange power-on button with a spray Contact Cleaner R-11.
• Inserted a thicker on the power-on button because the plastic pin that pressing the contact has deteriorated.

Note:

• External power supply 6v (TIP POSITIVE)

Gallery:

Cartridge shell for FinalGROM 99 – TI-99/4A

I have fit in a best way the pcb of the FinalGROM 99 inside a standard cartridge shell of a TI-99/4a game.

As you can see from the photos the final result is good, there are still some minor imperfections but i’m very satisfied.

I have made three cartridges shells, one for me and two for my friends Ciro Barile of  TI-99 Italian User Club, Andrea Pierdomenico.

Some things about the FinalGROM 99:

The FinalGROM 99 supports ROM images, GROM images, and mixed images of up to 1 MB in size that use the write-to-ROM bank switching scheme. The cartridge does not require the Peripheral Expansion Box and runs on both PAL and NTSC consoles, including modified consoles with an F18A. It will also run on v2.2 consoles and enables those to run ROM-only programs.

The cartridge offers some advanced modes that provide RAM and GRAM to programs. It also allows a running program to reload another program from SD card or to dump its state to SD card. All firmware of the FinalGROM 99 can be updated by SD card.

FinalGROM 99 is released as Open Source Hardware under the CERN OHL license and the GNU GPL license. Both hardware design files and firmware sources are available on GitHub.

For more information about this project please visit the project homepage hosted at GitHub.

Gallery of the works that have been made:

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Download:

• FinalGROM99 SD CARD Utility/Games Compilation (966)