Re: It is possible to power a Tranzport with a 5V AC adapter
IDK man. I ain't no electrimical engineeriner but that sounds like it could easily end in tears (and perhaps even fire).
ampfixer would likely have a good answer on this...
I seem to recall from when I was a kid there were special wall adapters you could use in these situations (as in using the existing battery contacts and "dummy" batteries when necessary).