Bonjour !
I am French and happy to join this group of Polysix owner. My old Polysix bought back in 1983 has been sleeping in the attic since 1990, until I have returned back now to my first love. Unfortunately I have discovered the battery leakage problem !
So I did the standard procedure (like many)
Spend a lot of time checking the lines on KLM-367 with plenty of leds on at start up..
Browse internet for hours (discover service manual, old crown, etc)…, change IC 30 & 31 … recheck continuity, still few leds on..
Recheck again, change all set of panel switches (vintage planet)..4 leds on... Bank B not working...
Check lines again, to get finally only leds A1 on start up. Great !
Unfortunately sound is not OK.
Tune seems OK, 6 voices are OK, voltages from power board are OK (15V, 5V -5V and -15V) all pots and switches seem to work except the 4x EG and 4x VCF pots which are not active!
I think at this stage it is useless to do the calibration procedure. Is there some indications, checking to start with to define if it is still a line/continuity problem or if electronic parts (IC, diode..) should be changed.
Thanks in advance for your help
Phil