HEY!!
I tried it in both an Amiga 1200 and an Amiga 4000 and same thing- no blue.
Other than that, it works beautifully! Sharp flicker free picture, just no BLUE!!
Any suggestions other than-
1. get a REAL graphics card
2. get a new scan magic
3. interlace flicker is your friend, learn to love it!
BTW, this is the internal model bought back in 1999!