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I'm in the US and to get my G7400 running I bypassed the whole internal PSU. If I remember correctly, the boards in a G7400 require 5V and 12V (the G7000 might only require 5V, not sure).
I had a broken external CR-ROM player whose external PSU gave 5V and 12V (I think all hardrives/cds need 5v/12v), so I ripped out the jack of the CD and wired it to the G7400. It's an ugly hack and fragile hack, but it works. I really should mount it somehow.

The G7000 console needs 5V regulated supply (when you don't use the internal or external power supply)

The G7400 console needs 5V and 12V regulated supply (when you don't use the internal power supply)
The internal power supply (240V) works on 120V too (no step-up converter necessary).

My dream was to make all the roms available, but when you see games like Incomming hitting the market before it's even finished, you can only regret it. Maybe if someone could put an emulator online on this site, and on https://experienciaodyssey.com.br/,  where people could play the games, without having access to the roms ...

Unfortunately, René has left the Videopac scene a couple of years ago.

Thank you very much for your answer. I followed your advice and by scouting this forum, I found many "work-in-progress" binaries to review and try out. Very cool !!!  

Overall, I get the impression Videopac homebrew dev is mostly focused on releasing limited-edition collector cartridges. That's perfectly fine of course, but it may explain why that scene stays niche? (compared to some other retro communities sharing a lot of open source which boosts knowledge and quantity/quality of releases)

Anyway, from Github, I also found two demos: "ODC2"(https://github.com/lameiro/odc2-demo) and "Rash"(https://github.com/petersobolev/rash).

Fixing an internal power supply of a G7000 console is not easy if you have little or no experience with these kind of things (switched-mode power supply or SMPS), but since a G7000 needs only 5V you could replace the built-in power supply by a 5V adapter. (at least 1.5A)
For a G7400 you would need an additional 12V adapter.

.. so what your saying if i have a G7400, a U.S Odyssey2 plug in adapter could by pass a power supply?  do you have the procedure?

Hi.

You can find some roms in the hoembrew section, maybe.

Hi! I'm Florian, from France, but living in Finland. I've been fond of the Videopac since the early 80s, but new here on this forum  . My Videopac (I have a French Radiola Jet 25 console) and my cartridges are currently >2500 kilometers away. Unfortunately I'm not able to access those for at least as long as the coronavirus crisis will continue  . So for the last few months I have got the ROM collection from "Rene's VIDEOPAC page" (great collection, it includes all the classics I had, plus a few more titles and prototypes) and have been playing Videopac (with my girlfriend) on an emulator (O2EM compiled on a Raspberry Pi).

My question is: Are there more ROMs I can play with?

That's the one. I'm not sure if it is the cord or the switchbox. That's why I'd like to bypass the box. If I still get the problem, I will look at opening up the unit and trying to replace the cord.

Thanks for the suggestions.

I tested the uSD Cart with TheVoice module on a VIDEOPAC G7000.
First to enable TheVoice you have to set "VOICE" from "OFF" to "REAL".
Most of the games do get errors during gameplay except "Acrobats".
Attack of the timelord/Terrahawks does work in the beginning but after a few seconds the voice gets muted or even gives a glitchy loop error sound and display issue.

I will do another test with my G7401+ as soon my VOICE+ adapter arrives and let you know if the issues are the same.

I'm afraid must be any problem, probably there are not enough power. I am trying to bought a "VOICE" module to be able to make trials.