I have a special problem with a repair project...I wanted to repair a broken Lisa 2/5 motherboard. It was an victim of battery leakage...cleaned everything and fixed the broken traces on the board. I did the best/simple way: wirework - until now, it always worked like a charm.
I just uploaded a short demonstration video of the actual behavior/startup. It seems to boot up just fine - seems to pass all diagnostics - typical beeps - but I just get this gray and static screen
Here's a short video I uploaded on my channel to demonstrate the behavior: https://youtu.be/kn6LVE4Xu-c
Does anyone has the correct schematics of the motherboard? I could find every schematics of the Lisa - unfortunately, not of that damn little motherboard?
I'm sure, it can't be anything big that troubles me here... it has to be between the signal traces to the crt/video unit?
What I can see on the motherboard, there are some resistors and all in all 2 capacitors on the board?
I need assistance xD Please help me fixing this and getting this beauty up and running again
These pictures I attached, should show you the condition at first before repair and now, after cleaning and partial fixing - for sure, the screen got much better at all, still broken but better
Edited by MarNo84, 25 August 2017 - 12:08 AM.