I have what is basically a NOS Franklin Ace 1200. It has been used probably three times ficne its unboxing, and when I recently set it up, it powered on and everything worked. After leaving it off for two days, I turned it on today, and the internal Disk ][ hardware isn't registering. It drops right to the prompt as if no Disk ][ Slot 6 stuff was present.
It hasn't bee moved, or otherwise disturbed in any way in the interim.
I opened it, reseated every IC, tried again; nothing. I tried a Disk ][ card in Slot 6, but this causes it to drop to monitor, as it conflicts with the internal Disk ][ circuitry.
Has anyone any knowledge on servicing this system? I canna imaging why the Disk ][ stuff would suddenly stop working.
It does boot DOS with a car din slot 7, but I can't use CP/M or a number of normal programmes witth it as they all expect to run from slot 6.