Rhodes Chroma Polaris

I recently received a Polaris as a gift.  It had not been powerd up 
in quite some time, and the batteries were dead.  I think it has lost 
its firmware.  It makes some odd beep and bloops but the oscillators 
are not functioning.  Does anyone have any idea how I would go about 
remedying this?  I am, for all intents and purposes, a total novice 
at synthesizer keyboards.  Can anyone point me in the right 
direction?  Do I need to track down some new components or is it 
fixable by flashing the bios?

eh, sorry about the username.  I created this account when I was a 
teenager and I thought the excessive stupidity of the username was 
hillarious, or something.