Search found 5 matches

by cwc
Thu Feb 28, 2019 10:00 pm
Forum: HELP!
Topic: Korg Polysix MG Issue
Replies: 9
Views: 4093

Re: Korg Polysix MG Issue

Thanks Mooger5 for your support so far. Recent death in the family, hence no updates for a while. It certainly puts life and hobbies into perspective. Enjoy it while you can, I say. Anyway, I solved the Polysix MG issue. Replacing the electrolytic capacitors on KLM-366 Voice Board did not work – rep...
by cwc
Wed Feb 06, 2019 11:49 pm
Forum: HELP!
Topic: Korg Polysix MG Issue
Replies: 9
Views: 4093

Re: Korg Polysix MG Issue

Update: I can see from monitoring the power supply voltages that the "modulation" symptoms occur while the voltage is increasing up to 5v after turning the synth on and disappear when a stable 5v is reached. This takes a significant amount of time (1 minute+) when turning the synth on from cold and ...
by cwc
Fri Feb 01, 2019 10:10 pm
Forum: HELP!
Topic: Korg Polysix MG Issue
Replies: 9
Views: 4093

Re: Korg Polysix MG Issue

Thanks once more, Mooger5. I removed the headers from the original KLM367 with my desolder gun and soldered them in to the clone board. I have checked and all the connectors are fully seated and the connections are good. As you suggest I will test if the fault gets stored in memory when the unit is ...
by cwc
Sun Jan 27, 2019 9:34 pm
Forum: HELP!
Topic: Korg Polysix MG Issue
Replies: 9
Views: 4093

Re: Korg Polysix MG Issue

Hi Mooger 5. Many thanks for the response. I am hoping KLM367 is ok as I bought it as a populated board. Since my original post I have noticed that if I disconnect the harness from CN05 from the clone KLM367 (i.e. the connector comes from the patch select, write enable/disable and tape enable/disabl...
by cwc
Tue Jan 22, 2019 12:43 am
Forum: HELP!
Topic: Korg Polysix MG Issue
Replies: 9
Views: 4093

Korg Polysix MG Issue

After many weeks refurbishing my "new" old Polysix I am very nearly there! I have one last issue before the final tune up and I wondered if anyone had any ideas. All knobs, switches and buttons on the synth work and do what they should. The KLM-367 board is a brand new clone with new clone CPU so I ...