Yahoo Groups archive

Cgs synth

Index last updated: 2026-04-28 23:16 UTC

Thread

CGS 07

CGS 07

2018-01-31 by Mike Burnham

My CGS 07 gate sequencer which has been working so well for a decade has suddenly become faulty

Its as if all outputs are stuck in full position

would that be a faulty 4081 in the output buffers?

Re: CGS 07

2018-01-31 by Mike Burnham

It is triggering on both positive and negative going edges of pulse or square from Utility LFO and just negative of some other clocks




From: cgs_synth@yahoogroups.com <cgs_synth@yahoogroups.com> on behalf of Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com>
Sent: 31 January 2018 14:07:15
To: cgs_synth@yahoogroups.com
Subject: [cgs_synth] CGS 07

My CGS 07 gate sequencer which has been working so well for a decade has suddenly become faulty

Its as if all outputs are stuck in full position

would that be a faulty 4081 in the output buffers?

Re: CGS 07

2018-01-31 by Mike Burnham

Fixed!
In stead of a lm358 I had put a tl072 for clock input.
I changed it to a lm358 and it works perfectly
I never noticed an opamp changing spec over time but it seems to have changed. Weird!
All good in the hood!


On 31 Jan 2018, at 16:26, Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

Show quoted textHide quoted text

It is triggering on both positive and negative going edges of pulse or square from Utility LFO and just negative of some other clocks




From: cgs_synth@yahoogroups.com <cgs_synth@yahoogroups.com> on behalf of Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com>
Sent: 31 January 2018 14:07:15
To: cgs_synth@yahoogroups.com
Subject: [cgs_synth] CGS 07

My CGS 07 gate sequencer which has been working so well for a decade has suddenly become faulty

Its as if all outputs are stuck in full position

would that be a faulty 4081 in the output buffers?

Re: CGS 07

2018-01-31 by Ken Stone

Odd! Well, I'm glad you got it going again.
Cheers,
Ken
Show quoted textHide quoted text
On Thu, Feb 1, 2018 at 4:15 AM, Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

Fixed!
In stead of a lm358 I had put a tl072 for clock input.
I changed it to a lm358 and it works perfectly
I never noticed an opamp changing spec over time but it seems to have changed. Weird!
All good in the hood!


On 31 Jan 2018, at 16:26, Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

It is triggering on both positive and negative going edges of pulse or square from Utility LFO and just negative of some other clocks




From: cgs_synth@yahoogroups.com <cgs_synth@yahoogroups.com> on behalf of Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com>
Sent: 31 January 2018 14:07:15
To: cgs_synth@yahoogroups.com
Subject: [cgs_synth] CGS 07

My CGS 07 gate sequencer which has been working so well for a decade has suddenly become faulty

Its as if all outputs are stuck in full position

would that be a faulty 4081 in the output buffers?




--
Ken Stone otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.