The battery pack in my Master 512 (The model with the 80186 CPU) had died.
I followed this simple guide to build my own battery pack. Once the new battery pack was built, and installed, I had to reconfigure the systems settings.
CO. BAUD 4
CO. NOBOOT
CO. CAPS
CO. DATA 4
CO. DELAY 50
CO. NOTUBE
CO. NODIR
CO. FDRIVE 0
CO. FILE 9
CO. FLOPPY
CO. IGNORE 10
CO. LANG 12
CO. MODE 135
CO. LOUD
CO. PRINT 1
CO. REPEAT 5
CO. SCROLL
CO. TV 0,1
My Mater 512 is happy again. Its now time to re-create the DOS and GEM disks. Wish me luck!