Re: [vintagesynthrepair] Re: Backlight Revisited...
2012-08-06 by jammie
are you getting 5v at the incoming circuit or is this voltage higher ... From: Quazimodo To: vintagesynthrepair@yahoogroups.com Sent: Monday, August 06, 2012
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Re: Backlight Revisited...
2012-08-06 by Quazimodo
Hello again, OK I swapped the smoothing Capacitor C28. No change... so to date I have checked the transistor, C28 and also the actual foil itself. Stil getting
Re: [vintagesynthrepair] Need help with Unstable Oscillators in Arp Odyssey 2800
2012-08-06 by Malte Rogacki
Some of this seems to point at Board A (octave switch and and possibly the unstable behaviour). I tend to exchange all opamps from Board A (with the same
Re: [vintagesynthrepair] Re: Backlight Revisited...
2012-08-05 by jammie
check the smoothing capacitor c28 the transformer is fixed uptransforms to the correct voltage for input so if the input ac voltage is wrong then it gets
Re: Backlight Revisited...
2012-08-05 by scott frye
Is the rep rate of the AC frequency set internally on the transformer module?....If not, there must be an external timing component that s making the thing run
Re: Backlight Revisited...
2012-08-05 by Quazimodo
Thanks for the reply. OK, so I am getting around 60volts A/C too much and the frequency is more than five times what it should be. I have removed and checked
Re: [vintagesynthrepair] Re: Backlight Revisited...
2012-08-04 by jammie
no 200 - 400 hz araound about 100volts ac ... From: Quazimodo To: vintagesynthrepair@yahoogroups.com Sent: Saturday, August 04, 2012 4:56 PM Subject:
Re: Backlight Revisited...
2012-08-04 by Quazimodo
Hi again guys, Re: my Wavestation backlight problem. I am getting 166 volts AC at 2.6Khz. Should this be OK for lighting a backlight? Cheers, TOM
Re: OT Sibelius
2012-08-04 by Daniel Forró
Dear friends, I m not sure if all of you are informed about recent situation concerning Sibelius score editor software. Please read this and consider signing a
Re: Full service manual for Korg Trident Mk2
2012-07-31 by alesisfusion8hd
Thanks Frank, but you have the same version I already have; schematics only, shuffled pages. However, little follow up: I swapped the SSM2044 (VCF) between
Full service manual for Korg Trident Mk2
2012-07-30 by alesisfusion8hd
Does anyone have the full service manual for Korg Trident Mk2? The one we find on the web has missing pages: no tuning procedure, no explanation of the misc
Re: Backlight Revisited...
2012-07-29 by Quazimodo
Okidoki - tonight I used my meter and measured the volts... I am getting 166 volts AC at 2.6Khz. Would this be OK for lighting a backlight? Cheers, TOM
Need help with Unstable Oscillators in Arp Odyssey 2800
2012-07-29 by Mike
Hi, I have a messed up Arp Odyssey 2800 that is in need of some love and repair. Currently, I have a laundry list of problems that need to be addressed. 1.)
Re: [vintagesynthrepair] Re: Backlight Revisited...
2012-07-28 by 65 Lotus
Didn t you use the meter to test the frequency? Should be no different checking voltage. ... From: Quazimodo To: vintagesynthrepair@yahoogroups.com Sent:
Re: Backlight Revisited...
2012-07-28 by Quazimodo
I dare not measure it with my meter as I was told it would cause more damamge to do so...!? I have put one of those neon test screwdrivers on it - and it
Re: [vintagesynthrepair] Re: Backlight Revisited...
2012-07-27 by 65 Lotus
What voltage are you reading? ... From: Quazimodo To: vintagesynthrepair@yahoogroups.com Sent: Friday, July 27, 2012 8:54 AM Subject: [vintagesynthrepair] Re:
Re: Backlight Revisited...
2012-07-27 by Quazimodo
Hi guys, Only just got around to checking this... when I use the frequency counter on my digital meter it reads: 2.6Khz So I assume that s my problem - the
*Retraction* Obsolete Parts Notification
2012-07-18 by survivor030406
Well this is interesting. Today, I got this in my email. *Retraction* Obsolete Parts Notification Greetings, The week of July 9, you may have received an
Re: [vintagesynthrepair] Re: Backlight Revisited...
2012-07-18 by 65 Lotus
Yes, that should work. An oscilloscope would be the better way of course, but the meter should read it fine if the voltage is there. ... From: Quazimodo To:
Re: Backlight Revisited...
2012-07-18 by Quazimodo
Before I do something stupid, or blow something up - can I measure the 400Hz with the frequency counter on my digital meter, to see if it s there...? Cheers,
Re: Simple Univox Minikorg 2 Issues
2012-07-18 by Martin Selwood
Hi Robert, I m not sure if it helps at all but I had a similar click problem with my Moog Prodigy. Turned out I managed to put the keyboard connector on the
Simple Univox Minikorg 2 Issues
2012-07-17 by r andrew
Hello! I m trying to track down the last two lingering issues on my Univox Minikorg.. 1 - There is often (30-40% of the time) an audible click (or snap) when
Re: [vintagesynthrepair] Re: Backlight Revisited...
2012-07-17 by 65 Lotus
100 VAC @ 400 Hz. http://retroactivesynth.com/index.php?page=backlight-mayhem ... From: Quazimodo To: vintagesynthrepair@yahoogroups.com Sent: Monday, July 16,
Re: Backlight Revisited...
2012-07-16 by Quazimodo
I was told that you cannot/should not measure the voltage with a meter... but to use an a/c checker, like the neon screwdriver, which does light! As the neon
Re: [vintagesynthrepair] Backlight Revisited...
2012-07-16 by 65 Lotus
Have you checked frequency on the supply line? It is AC you know... Scott ... From: NoëlBuhagiar To: vintagesynthrepair@yahoogroups.com Sent: Monday, July
Re: [vintagesynthrepair] Backlight Revisited...
2012-07-16 by NoëlBuhagiar
Hi, You could have low voltage at step-up transformer output. Transformer could have developed shorted turns. Do the oscillator transistors get hot? Good luck,
Re: Backlight Revisited...
2012-07-16 by Quazimodo
Thanks, but it s not that. I had already checked and the ground pin is fine. I have continuity. This is why I m confused...! Cheers, TOM
Re: [vintagesynthrepair] Backlight Revisited...
2012-07-16 by jammie
loss of ground ... From: Quazimodo To: vintagesynthrepair@yahoogroups.com Sent: Monday, July 16, 2012 5:52 PM Subject: [vintagesynthrepair] Backlight
Backlight Revisited...
2012-07-16 by Quazimodo
Hi folks, I wonder if anyone has any ideas about this one. I bought a new backlight for this Korg Wavestation EX... it didn t work. I checked the pins on the
Re: [vintagesynthrepair] Clef String Ensemble AY-1-0212
2012-07-16 by Paul Rak
Are all messages moderated? If so, they could have been stuck in the moderation queue, awaiting attention.. ... -- There are only 10 kinds of people in this
Re: [vintagesynthrepair] Clef String Ensemble AY-1-0212
2012-07-16 by butterfield colin
Hi guys,thanks for all your help,Greenhill have one for £35.00 and also Vintage chip for 28 euros.Sorry Hugh,the diags and shematics are not available
Re: [vintagesynthrepair] Clef String Ensemble AY-1-0212
2012-07-14 by Daniel Forró
And this last one only 30 seconds after sending it? Yahoo is strange... Daniel Forro
Re: [vintagesynthrepair] Clef String Ensemble AY-1-0212
2012-07-14 by Daniel Forró
Why my messages came delayed five days? Daniel Forro
Re: Minimoog D pitch drifting
2012-07-09 by narfman96
Hi Gil, CV pitch is one volt per octave in the Minimoog. It doesn t take much of a resistive connection to throw the scale off.
Re: Minimoog D pitch drifting
2012-07-09 by Gil
Cleaning the keyboard contact with alcohol cleaner, I could play for a couple of hours without seeing the problem. How likely that this was caused by bad key
Re: [vintagesynthrepair] Re: Minimoog D pitch drifting
2012-07-09 by lhammond
I use felt pipecleaners as you can bend them around contacts and they absorb cleaning liquids. But the best is to pullthe rodd and buff it on the sort of
Re: [vintagesynthrepair] Re: Minimoog D pitch drifting
2012-07-09 by Roger J
The pitch changes as a key go down indicates a resistive connection between the contact and bus rod. Often they are worn, sometimes damage through bad
Re: Minimoog D pitch drifting
2012-07-09 by Gil
Hi all ! So I received it a week ago and did the following - 1. I took all PCB s out and cleaned the connectors 2. I rewires a few bad solder joints going to
RE: [vintagesynthrepair] Clef String Ensemble AY-1-0212
2012-07-09 by Mark Wallis
W.D.Greenhill has them. To: vintagesynthrepair@yahoogroups.com From: cjbutterfield@blueyonder.co.uk Date: Sun, 8 Jul 2012 14:53:27 +0000 Subject:
Re: Clef String Ensemble AY-1-0212
2012-07-08 by narfman96
Hi Colin, Did you try here for a retro? http://www.organservice.com/crm/topdividers.htm
Re: [vintagesynthrepair] Clef String Ensemble AY-1-0212
2012-07-08 by Hugh Vartanian
Hi colin, are the articles and schematics online anywhere? Glad to look at the circuitry and render an opinion on sharing the device. I found a datasheet for
Re: [vintagesynthrepair] Clef String Ensemble AY-1-0212
2012-07-08 by Daniel Forró
And here: http://www.organservice.com/scgi-bin/SearchPart.pl or http://www.wdgreenhill.com/AtoZ/semiconductors.htm Daniel Forro
Re: [vintagesynthrepair] Clef String Ensemble AY-1-0212
2012-07-08 by Daniel Forró
Try to ask here: http://www.vintagechip.altervista.org/ Good luck! Daniel Forro
RE: [vintagesynthrepair] Clef String Ensemble AY-1-0212
2012-07-08 by Brian
Hi Colin W D Greenhill at www.wdgreenhill.com claim to have these in stock. I know Bill and his son Nigel, the owners of W D
Clef String Ensemble AY-1-0212
2012-07-08 by colinbutterfield@ymail.com
Hi Guys,many years ago(34 to be exact) I built the Clef Products String Ensemble from articles in Practical Electronics.This was one of the best analogue
Re: [vintagesynthrepair] Re: Minimoog D pitch drifting
2012-06-30 by Paulo Palmieri
That´s right. To affect the 3 oscillators maybe the countour generator could be the problem or the PCB conectors already commented here. This is the late
Re: Minimoog D pitch drifting
2012-06-29 by Quazimodo
So it s a late, *stable* one... OK, then it will probably be much like I said in the first place. Check those flags...!
Re: Minimoog D pitch drifting
2012-06-29 by Gil
Thanks. Serial is 12044. Supposed to get it in a few days so I ll be able to tell what it exactly uses (or do you know be the serial number?)
Re: [vintagesynthrepair] Minimoog D pitch drifting
2012-06-29 by Paulo Palmieri
Hi Gil, Probably there is a variation in the cv voltage that controls the oscillators. I experienced similar issues on the osc 1 of a RA Moog model (the first
Re: [vintagesynthrepair] Re: Minimoog D pitch drifting
2012-06-28 by lhammond
You didn t undo teh connector by teh pitch wheel when you looked at the bushings did you? Sometimes a poor connection there is a cause of issues. the factory