Patches and discussion for Ensoniq VFX family

Hi,

Just bought SD-1 (1991, rom 3.0, seq.OS 3.0, sequencer 75K)
and got several problems or is it just one?
After powering ON every time need to load sequencer OS and
all edited programs will be replaced by default programs in
INT bank, plus trying to save a new sequence [keep new track?
- yes] got display showing EDITING DATA... forever.
Analog test showing 215 blinking 214 for battery.
Reinit doesn't help.
Opened hood and found no battery at all???
Is it visible? Anyway I can see empty space on big plate
with "rectangle, + , -, bat1" marks at the left corner near back
of SD-1 (actually center of the SD near label about batteries).

Need some help, please, how to fix it.

Thanks
Serge