Hi Jens -
My MK2 which I have been happily using for many years has gone crazy. I was at AmiWest this weekend and had my keyboard connector replaced, so I had to remove my MK2 - when I put it back in, my display at first looked normal, but my monitor claimed it was sending a 41.5 Khz signal, and warned it was incompatible and shut the monitor down. When I got back from AmiWest it was worse - I booted up and just got the attached colorful, but totally useless screen. I have tried reflashing the cores and trying different screen modes, but always with the same corrupted borders and display. Regular RGB works fine with no issues.
I see no physical damage on the MK2 or on the Lisa chip. Anything else I can try or did this little guy just die?
Thanks,
Douglas (10 Minute Amiga Retro Cast)