Weird issue with Amiga 600

[Dr.Bongo]

If you switch the 600 on is the boot time before the kickstart screen about 30 seconds? If,  so it's most likely that the internal floppy drive is faulty causing the delay. Try re-attaching the floppy cable at both ends.

[Dr.Bongo]

As a test, plug one of the internal floppy's from your other 600 or even your 1200 in and see if corrects it. Just going from experience here, but I wouldn't be surprised. Also, bet this will bug you until next weekend

[Dr.Bongo]

No floppy in amiga = delay. Same thing when the drive is faulty

[Dr.Bongo]

spectrum, atari st, segas, etc

erm, they don't have a composite output though. So how are you connecting them?

[Dr.Bongo]

The RF signals won't work correctly to NTSC AFAIK. The Amiga's will on composite because it doesn't rely on video standards. Composite is composite.