I bought the GBA Transverter a few years ago from a UK site (long since stopped selling them). I put it on my old GBA, only used it for tv out once, got a GBA SP and used the old GBA for flashing a flashcart - it spent most of its time collecting dust.
You can't get these anymore, couldn't find any on the internet or even on E-bay; however there is another tv-out system for the GBA available - it is easier to wire than the Transverter as you don't need to solder directly to the chip pins and the sync and ground are easy to locate. These appear on E-bay typically on "GBA tv converter" - there are a couple on E-bay at the moment...
Both types of GBA tv out are great, the Transverter gives you full horizontal screen size and about 90% vertical; the other GBA tv out type (easier to find) only gives more like about 70% full size (horizontal and vertical on PSone screen) - however you could still do a proper mod with it. I bought one of these recently too, couldn't make it work - the Transverter uses a ribbon cable to connect to the GBA cable attachment, the other method makes the connections to the rear of the ribbon cable on the GBA which is rather fiddly - if you bend the cable round it might connect into the GBA ribbon holder - will try this out.
If a new Forum heading is made to allow people to post for "other" projects, like the GBA, I can upload a guide (based on existing link, but more defined explanations) and also give the pinouts for the other GBA tv out card, as the alternative. If a new subsection isn't made I will post details in "News" when the project is completed, however it won't be long before it gets lost in the forum as it works its way down the forum topics; if there is a subsection made available, it will be there permanently! I have done a lot of research, I would like to think others could benefit from what I am doing - and the way to maximise this is with a new subsection - even if it is only labeled as "Other systems not listed, eg GBA".
