68kMLA Classic Interface

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Major Setback!
Posted by: maceffects on 2019-09-06 19:34:23
I'm going to be attending VCF Mid-west and since my last board I sent out for recapping appears to be stolen, I found someone else to recap my last SE/30 board so I would at least have one for the show to display my new case...  Well, I got it back and here is what is on the screen. 

Any help troubleshooting this would be VERY appreciated

IMG_7813.jpeg
Posted by: maceffects on 2019-09-06 19:46:38
I should also mention that if I use an aftermarket ROM I do get a chime, but the screen is still distorted.  See attached.

IMG_7815.jpeg
Posted by: olePigeon on 2019-09-07 18:34:07
Wish I could help you, but I'm nowhere near ya.
Posted by: Bolle on 2019-09-08 10:26:26
Is the board booting fine otherwise and you just get a corrupted image on screen?

In that case I would take a look at the VRAM address muxes (UA8-UD8) and video line and column counters (UF8 and UG8) first. Also have all traces going to them checked for continuity.
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