- Guru Error (8000 0004, 8000 0003, 8000 000B, etc.) The range of errors is pretty
- 80000003 Illegal address access
- 80000004 Illegal instruction
- 8000000B Line F emulation error
From what I understand, you've booted this A600 with only motherboard, screen and PSU.
Given that, and still those Gurus I'd suspect Caps(you've swapped those) or custom ROMs with some misbehaving patches in.
I'm sure a bad PSU could also cause problems. But the last guru listed is a FPU related bug:
8000000B:
when a program tries to execute a FPU instruction on a processor without a FPU, or there is a problem with the 68040/060 library.