Discussion about the Korg PolySix synthesizer

Hello out there.
I just bought a Polysix and it doesn't work as described! Here are 
its symptoms:
1) MG speeds up into extreme range upon power up.
2) program buttons 4 and 5 stay lit.
3) From the front panel ONLY arpeggiator and unison/poly/chord 
features work. No synth control at all!
It sounds like the EPROM is messed up or its in some sort of secret 
mode that it can't get out of.
I checked under the hood, and to my delightful suprise, the battery 
had been changed the boards look prettier than my Juno 106!
Any thoughts?
Thanks,
Roger