Discussion about the Korg PolySix synthesizer

Hi all,

i just bought my first Korg Polysix from the first owner. Unfortunately
(well he wrotes in his Ebay Page) the Korg does not make any voices, 
just keeps silent.

What i already did:

- checked the battery -> no signs of cossosion or broken wires
- loaded various sounds via the tape-in (the factory sounds)
  -> the polysix reacted and loaded the settings from "tape".
-> function of every key is working, it just don't produce
   any sounds..

the owner told me:
- it lost voice after voice.

any idea on what i can test/ do next ?

--jan