I don't know really what is going on. I have an A1200 with aca 1233 bought back in 2015. I use this machine from time to time since I have vamps in other machines, but it is not as compatible as the aca. I use the scart for video nothing else in the machine.. PSU is meanwell RT65B.
It has been working 100% stable for years. Now two weeks ago I ran in disk errors. Now since then even with other CF card and new install, after moving the CF to A1200 it runs into disk errors. I can't use this system for longer then one hour, and then they are back. Reading the cf card in hdtools gives garbage information on the real A1200. Somethimes recycling the power and rebooting solves this. Somethimes I get the rom and it does not boot.
when I partition and use in winuae (workbench 3.1.4 and betterwb) it remains stable - no disk errors. I tried with MMU tools and without.
I also tested the cf card in windows full format, no errors..
Any advice would be welcomed.