I suspect the 53C80 and 8530 chips are bad, personally.
I don't suspect the 53C80 - that's the SCSI chip.
The 8530,
if I have the right chip from a quick Google, is simple enough to manually test. It's just a buffer with inverting and non-inverting outputs. Power it, and put and input high or low and the corresponding outputs will go low and high or high and low.
Duh, it's the Serial chip sorry. I'm being daft.
Again, the serial chip is unlikely to cause stripes. I'll see if I can find a "no ROM stripes" photo from my SE/30.
But the symptoms you describe are often ROM related. So firstly - what style of ROM are you using? How did you write it? I haven't made a reloaded board, but I have seen that ... I believe
@Bolle organised the ROM chips differently, so just writing standard ROM downloads to the chips results in a non booting machine. Is this right
@Bolle? Sorry to drag you in, I'm not familiar with what you did other than passively.