Today I was using my Indivision AGA MK3 on my Amiga 1200 and suddenly I get the artifacts in the screen.
My Amiga 1200 has a Blizzard 1230IV and a REV1D4 Motherboard. The PSU I tested are an A500 Light PSU 4.5A and The CA-PSU.
I also swapped the Indivision AGA MK3 with other Indivision AGA MK3.
After swapping I didn't have this issue. I also tried the artifacted Indivision AGA MK3 in the other Amiga 1200 with a REV2B Board and A GVP 1230 II.
It also gives artifacts.
I also tried two monitors ands cables. Both Amiga 1200 has been recapped. I thik I need to send it to repair.