Search found 408 matches

by Dr. Phibes
Sat Mar 12, 2016 6:22 pm
Forum: General Synthesizers
Topic: Synthrestore ZV-10
Replies: 8
Views: 4055

Re: Synthrestore ZV-10

I wouldn't say £475 is necessarily overpriced for a 3 osc, 3 octave keyboard (did I read that right?) synth but it depends on how deep the modulation matrix is.
by Dr. Phibes
Sun Mar 06, 2016 11:35 am
Forum: HELP!
Topic: Crumar Trilogy - Dead Preset
Replies: 4
Views: 2290

Re: Crumar Trilogy - Dead Preset

Thanks, but it turned out to be something else. See those little blue things? Those are mini switch banks that control the square wave and sawtooth input for each preset. At some point in time both had been switched off so nothing was playing. http://i1383.photobucket.com/albums/ah313/FartsMckenzie/...
by Dr. Phibes
Sat Mar 05, 2016 11:37 am
Forum: HELP!
Topic: Crumar Trilogy - Dead Preset
Replies: 4
Views: 2290

Crumar Trilogy - Dead Preset

Preset 8 makes no sound. Personally, I couldn't care less but I thinking about selling it soon and I want everything working 100%. I just can't seem to get a handle on it. The logic signal seems fine (111). I've replaced every one of the 4051 multiplexors and dual op-amps on the preset board (one fa...
by Dr. Phibes
Sat Mar 05, 2016 8:30 am
Forum: General Synthesizers
Topic: Recapping a Jupiter-4
Replies: 47
Views: 12665

Re: Recapping a Jupiter-4

I don't think you have to fork out for audio grade caps really.
by Dr. Phibes
Sat Mar 05, 2016 8:26 am
Forum: General Synthesizers
Topic: Replacing the ungodly plywood on my JX-3P.
Replies: 11
Views: 2386

Re: Replacing the ungodly plywood on my JX-3P.

Who cares about the base? It's just going to bashed around and scratched to buggery anyway.

Just repaint it.
by Dr. Phibes
Wed Feb 17, 2016 5:24 am
Forum: General Synthesizers
Topic: Korg Minilogue Polyphonic Analog Synth
Replies: 153
Views: 55419

Re: Korg Minilogue Polyphonic Analog Synth

Love the oscillators but that envelope problem is one h**l of an own goal.
by Dr. Phibes
Mon Jan 25, 2016 9:42 pm
Forum: General Synthesizers
Topic: Arturia Matrixbrute
Replies: 52
Views: 21810

Re: Arturia Matrixbrute

Vert, very cool. That is a shit-tonne of functionality in one case. I'm seriously tempted but I'm a not a preorder kind of guy so I'll be interested to hear some third-party reviews when the time comes.
by Dr. Phibes
Thu Jan 07, 2016 11:38 am
Forum: General Synthesizers
Topic: On the importance of using "hot" gear
Replies: 19
Views: 7978

Re: On the importance of using "hot" gear

I don't condone stealing.
by Dr. Phibes
Mon Jan 04, 2016 7:25 pm
Forum: HELP!
Topic: ARP Omni 2 sustain (release) problem on all sections
Replies: 12
Views: 6980

Re: ARP Omni 2 sustain (release) problem on all sections

Are these linked to the string section? Indirectly. The reason why I asked is that since both the synth & string release is acting up I suspect there's still a fault with the foot pedal release or the suppression trigger - pulse drive & adsr blanking rely on these to work properly. You could try ch...
by Dr. Phibes
Sun Jan 03, 2016 4:40 am
Forum: HELP!
Topic: ARP Omni 2 sustain (release) problem on all sections
Replies: 12
Views: 6980

Re: ARP Omni 2 sustain (release) problem on all sections

Try checking if the the 'pulse drive' and 'ADSR Blanking' circuits working as they should. The pulse drive resets the envelope every time a new key is played (unless the single trigger switch is on). The ADSR Blanking stops the ADSR resetting when the sustain pedal is released. The easiest way to ch...
by Dr. Phibes
Fri Jan 01, 2016 6:02 pm
Forum: HELP!
Topic: ARP Omni 2 sustain (release) problem on all sections
Replies: 12
Views: 6980

Re: ARP Omni 2 sustain (release) problem on all sections

You see those little metal-can transistors Q28 & Q29? Check those - one of them failed in my omni leading to similarly odd release behavior. Luckily they're both just bog standard 2n2907 PNPs.
by Dr. Phibes
Tue Oct 27, 2015 6:13 pm
Forum: HELP!
Topic: Juno 106 power supply problem
Replies: 20
Views: 4115

Re: Juno 106 power supply problem

Feel free to send the bill for the regulator to me.

I mean, I won't pay it but you can always send it.

But seriously, probs should have said to replace the caps first. The ESR of those old electrolytics gets worse with age and could be messing with the reference voltage.
by Dr. Phibes
Tue Oct 27, 2015 8:59 am
Forum: HELP!
Topic: Juno 106 power supply problem
Replies: 20
Views: 4115

Re: Juno 106 power supply problem

I'd replace the M5230L regulator and see how things go from there.
by Dr. Phibes
Sun Oct 18, 2015 7:55 pm
Forum: General Synthesizers
Topic: More Bad Vintage Capacitors!
Replies: 7
Views: 5588

Re: More Bad Vintage Capacitors!

This is what puts me off dealing with a lot of old tube-based gear.
by Dr. Phibes
Sun Oct 04, 2015 1:26 am
Forum: HELP!
Topic: Irritating Omni Problem
Replies: 0
Views: 1736

Irritating Omni Problem

Playing this thing again I noticed an annoying little fault that I just can't seem to solve. It affects key 12 (B3) through to key 20 (G4). After I release one of these keys the note very slightly retriggers a second or so later (even if no actual 'instrument' is on). I'm pretty sure it's an issue w...