All the lights of the Bank as well as 1, 2, 3, 4 remain lit
= setting klm-376 connect a 56 ohm 2p 2pin for klm-376
Service manual throughout the procedure and explain
Octave button not working = the battery is necessarily a track cut or IC30
or 31 no longer works
LFO = IC21 13600
Voice 5 seems dead. A swap of both = 2044 SSM or diode led
Sub-osc = ic 13600
www.audio-synth-vintage.com
@+
philippe
De :
PolySix@yahoogroups.com [mailto:
PolySix@yahoogroups.com] De la part de
7yash
Envoyé : lundi 8 octobre 2012 18:14
À :
PolySix@yahoogroups.comObjet : [PolySix] Polysix restoration: LEDs, Sub-Osc LFO issues.
I am trying to restore a good old Polysix which suffered from the usual
battery leakage and need some help to see on what areas I should focus. It
has a KLM-367 board.
The battery was removed and the board cleaned up. The traces appear good,
but I should test for continuity for sure. I re-populated the board, and did
hear the Arpeggiator work with a nice sound. I could get Cutoff, Resonance
and the Envelope to work.
What does not work:
- All Bank LEDs as well as 1, 2, 3, 4 remain ON.
- Found stays ON
- LFO appears to always act upon the pitch
- Voice 5 seems dead. A swap of both SSM chips on that segment did not
change a thing
- Sub-osc does not seem to work
- Octave button does not seem to work
Any help on what to look for and procedures would be most welcome.
Yash
[Non-text portions of this message have been removed]