My recently purchased MK2 screen went blank while I was setting up a Link232 cartridge linked to my PC. I shut the MK2 power off and removed the link232.
I booted the MK2 back up and it booted fine just no cursor. When this happens as you know it more than likely a bad CIA chip. I swapped them out and no change. I tried another set and still no cursor.
I plugged in a diagnostic cartridge and it listed both CIAs as bad. I did this with 6 different chips and the result was the Same. I hooked the MK2 up to term and updated the firmware in case that is an issue. No change. I’m hoping someone could help with this.