You have an SX32Pro! Does it have the 030/50mHz in it? In what way is your DCTV not working? What is it doing?
I used to have DiskMaster2 setup to convert Amiga IFF files to DCTV format with just one click on a custom command button, but have not used it in ages. I'll see if I can find it on an old hard drive or floppy somewhere in the maze that my collection has become.
I think DCTV was one of the most amazing products for the Amiga of its time. To think of the quality images and animations you could do with just a 68000 at 7mHz, I am surprised that more was not done with the DCTV format and Amiga games that displayed 24bit composite output.