Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

HI!
I have putted new socket and new ic31 chip,and repaired all bad tracks and cleaned klm 367a with isopropyl spray called Kontakt IPA. So now program buttons working correctly but its still weird sound from synth. I don't know what should i check now,where can be a problem?Maybe someone have detailed schemes of synth (I have Service manual) or someone know how to check boards for troubleshooting or maybe know weak places of Korg Polysix to tests them.There is a TEST switch on the KLM 367a, what is that,i can test the board with this switch?From where i should start and how to test?
Thanks a lot!