TRS-80 Model II CRT Blurry with Horizontal Lines

[VeryVon]

Another issue has popped up. When booting into the official Tandy Radio Shack diagnostics suite (TRS8TEST.IMD) from the model2archive, it looks as below. My first guess is this is a different video mode than the CP/M disk? According to TRS-80 docs, there were two modes, 80 & 40 column. I'm guessing this is 80 column?

 

[VeryVon]

When I figure out why the display looks as in the previous post (can it do that just based on bad data from a floppy drive?) I'll update the thread, and just wanted to end on a happy note, I have the machine booting up on the 8" drive now. Time to rebuild the keyboard ... 😬