Graphics corruption

[freqmax]

What is this floppy power connector? picture?

Anyway I suspect memory transmission error. It's very perculiar that only every n:th bit gets corrupted. Perhaps some PCB trace is dirty such that a capacitance has developed?

[freqmax]

AmigaOne is a PowerPC/Hyperion-OS thing. Not 68xxx with AmigaOS.

[freqmax]

Write an appliction that tickle bit-by-bit and see how it works. Might be that the memory works alright, but the graphics chips reads wrong.

[freqmax]

It helps by showing that up to 125 MHz should work?

Pushing the D/A (or RAM) above certain bitrates can make them go gibberish.

Anyway if you lack programming skills paint some pictures with vertical lines of different base colors + white (R-G-B-White). Make a slide show of it if you can. Also open one picture in a window you can move horizontal and vertical to see what happends.

[freqmax]

Yeah try with another motherboard. And please upload some pictures of your hardware.

[freqmax]

@560SL, Perhaps ESD damage?