:b&w: :b&w: :b&w: Success. Thank you so much wally, you advice was accurate and concise. While it was not the exact solution , it started me on a road that lead to a sweet booting SE/30.

After replacing all of the chips from UG8 to UA8 with no chance I went searching for the video schematic a little deeper. Link below. After loads of tracing with the DMM I found a possible cause.

It turns out that I had faulty video memory. I had a short between pins 1&2 on UC7. The short was caused internally in the memory chip, and this was causing vertical bars on the screen. It turns out that the Hi Res Mac II Graphics card uses the same memory chips, and quick snip and relocation lead to partial success.

I now had video but was covered by white bars, about 5mm wide and still vertical across the screen. I then replaced the other memory chip which cured all video artifacts.

Thanks again I have included pics of work in progress and finally my finder up and running.

Video Schematic found on web.archive.org.

http://img264.imageshack.us/img264/5788/videowg3.gif

http://img510.imageshack.us/img510/2515/solderingzv5.jpg

http://img386.imageshack.us/img386/9179/videomemks9.jpg

http://img101.imageshack.us/img101/9866/osesbu6.jpg