Re: [vintagesynthrepair] Re: Kurzweil K2000 Query
2009-07-28 by Stephen Jones
They do tend to fail in groups, usually if there is a floating earth potential in the equipment that you connect the K2000 to via the audio jack. It is a bit
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Re: Kurzweil K2000 Query
2009-07-28 by soundcrafter
Interesting... can anyone confirm this? Or would it be a bad idea?
Re: [vintagesynthrepair] Re: Kurzweil K2000 Query
2009-07-28 by GB
If memory serves you can even remove them. Like an appendix or tonsils. GB ... From: soundcrafter To: vintagesynthrepair@yahoogroups.com Sent: Monday, July
Re: Kurzweil K2000 Query
2009-07-28 by soundcrafter
Some others had suggested this as well, so I think I will start my checks here. There is one of these on each output? If so, it seems unlikely they would both
Re: Moog Modular 901a/b Driver and Osc question.
2009-07-28 by Quazimodo
Many thanks for the reply Terje, I can now see that also pin 13 is ground so I understand how it interfaces. Thanks again Tom
RE: [vintagesynthrepair] Re: Wurlitzer Funmaker 435 Organ
2009-07-27 by Keith Niver
It may not be such a wee problem. My suggestions is to go to www.mitatechs.org and find a tech close to you. It could be a supply voltage problem to the pedal
Re: Wurlitzer Funmaker 435 Organ
2009-07-27 by chetbush
... Thank you for your response, Chet
RE: [vintagesynthrepair] Wurlitzer Funmaker 435 Organ
2009-07-27 by Keith Niver
Do the pedals play if you are using the touch tone chords? How about dancing chords? Are all the pedals dead? Keith A Niver ... From:
Re: [vintagesynthrepair] Moog Modular 901a/b Driver and Osc question.
2009-07-26 by Terje Winther
Pin 6 of the driver, which controls the pulse width, goes to pin 6 of the osc, which goes directly to the pulse section. This also happens to be the c
Moog Modular 901a/b Driver and Osc question.
2009-07-26 by Quazimodo
Hi everyone, I have a question about the early Moog Modular 901a/b Oscillator Controller/Driver. The cicuit diagram can be found here at the Moog Archives
MG-1 keys
2009-07-26 by Wayne Griffin
Are there any Moog MG-1 keys in your midst? I ve been without a G# for the last 5 years. Thanks! [w] Are there any Moog MG-1 keys in your midst? I ve been
Wurlitzer Funmaker 435 Organ
2009-07-26 by chetbush
Bought this Organ at a garage sale. The Organ looks good and the upper and lower manuals play well. PROBLEM: No sound from the pedals... There is a amber
Plugs for Mini Moog mods
2009-07-20 by Scott
There are some rip-off people out there charging TOO MUCH for older connectors. These two are used for the Mini Cinch Jones 302( 2 pin) Switchcraft S260 ( 3
FS: 4 x CEM 3320
2009-07-14 by Janne Lappalainen
For sale four CEM3320 voltage controlled filter ICs, new old stock. Used e.g. in Oberheim OB-Xa, Elka Synthex, Sequential Pro-One. Price: 100 € all four.
Re: [vintagesynthrepair] Kurzweil K2000 Query
2009-07-14 by Stephen Jones
It is not uncommon for failures of the J109 FET s on each output of the K2000 to fail. They are there to prevent turn-on thumps through your speakers. You can
Kurzweil K2000 Query
2009-07-13 by soundcrafter
I m taking a look at a K2000 for a friend. We were playing, and suddenly the K2000 lost volume... It wasn t a dramatic loss, the patch was still audible, but
NOS Moog Music power regulator boards available
2009-07-13 by Mrs. Synthfool
Hello! Yep, another shameless self-promotion, but this one s just for this group. :) I ve got 4 of these available @ $20 each:
Korg Mono/Poly "modular" modding
2009-07-12 by Johnny
I m curious if anyone has ever thought about modding a Korg Mono/Poly with CV jacks for it s various parameters? I d love to be able to route the white noise
Re: [vintagesynthrepair] Re: DAC700 Needed
2009-07-11 by Stephen Jones
I think that you can use a DAC 71 in there as well, they used both in the P600. From experience, before you buy a new DAC, double check that the problem isn t
Re: [vintagesynthrepair] Re: DAC700 Needed
2009-07-10 by Elaine Jones
It s needed for a prophet 600. Elaine
Re: DAC700 Needed
2009-07-10 by Scott
... HI.... What synth is that part of? I might be able to help.
DAC700 Needed
2009-07-10 by Elaine
Does anyone know where I can get a DAC700? Elaine
Kurzweil 250 Power Supply Schematic needed
2009-07-10 by Elaine
Does anyone have a schematic of the power supply for the Kurzweil 250? I replacing the switching supply with 2 regular ones and the diagram would sure help a
Re: Sysex info for Yamaha VL70-m
2009-07-10 by rpcfender
Time to hit me on the back of the head %( Thanks Alan. I saw that manual and thought it was just a list of the presets, so I didn t bother downloading it. duh
Re: [vintagesynthrepair] Sysex info for Yamaha VL70-m
2009-07-09 by Alan Probandt
Download the other user manual (the list manual ) for this instrument. http://www2.yamaha.co.jp/manual/pdf/emi/english/synth/VL70mE2.pdf
UP loaded ASR10 manual
2009-07-09 by Scott
A PDF service manual for the ASR10 Ensoniq
Sysex info for Yamaha VL70-m
2009-07-09 by rpcfender
Does any one have a service manual for the Yamaha VL70-m synth? I was wondering if there is a sysex spec in it. It has a method of dialing the sysex message
New file uploaded to vintagesynthrepair
2009-07-09 by vintagesynthrepair@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the vintagesynthrepair group. File :
Re: [vintagesynthrepair] SH-101 tuning and modulation
2009-07-08 by Malte Rogacki
OK, that shows that the DAC is working properly. Next test: Put the filter into self-oscillation (resonance max, cutoff so that you hear some sound) and set
Re: [vintagesynthrepair] SH-101 tuning and modulation
2009-07-08 by Scott S.
The CV is outputting more or less one volt per octave. I say more or less, because some are off by as much as a hundredth of a volt, but since the whole thing
Roland VK-9 Service Manual
2009-07-08 by Paulo Palmieri
Hello everybody, I´m strongly needind the Roland VK-9 service manual and I would like to know if there´s anyone who could send me a pdf or printed copy.
Re: [vintagesynthrepair] SH-101 tuning and modulation
2009-07-08 by Malte Rogacki
... Did you remove it, whatever it was? Next step: Measuring the output of the CV out. We need to narrow it down to the section that is reponsible for the
Re: Crumar Orchestrator tuning?
2009-07-08 by d t
Oddly enough, the synth is now in tune. I had it open to replace some of the broken control sliders - when I powered it up, the tuning issue had vanished.
RE: [vintagesynthrepair] Re: Moog Prodigy
2009-07-08 by Brian Davies
Hi Alexis Many thanks for that this will be perfect. Also many thanks to the others who offered to assist. I now have a couple of copies. Regards Brian G3OYU
Re: Moog Prodigy
2009-07-08 by imbuedblue
Hi Brian, I just uploaded a PDF of the service manual to the files section of this group. Cheers, Alexis
Re: MK50242N
2009-07-08 by nickwest16
Re: Moog Prodigy
2009-07-08 by martinreuter
... Hi Brian, if you don´t find one in the net - i have the original diagrams here at home (germany). Do you need a pdf or a xerox? Which serial number is
Moog Prodigy
2009-07-08 by Brian Davies
Hi Guys Can anyone tell me where to obtain a schematic for a Prodigy please? Regards Brian G3OYU www.g3oyu.co.uk
RE: [vintagesynthrepair] MK50242N
2009-07-08 by Brian Davies
Hi Nick This URL claims to have them http://www.vintagechip.altervista.org . Regards Brian G3OYU www.g3oyu.co.uk _____
Re: [vintagesynthrepair] SH-101 tuning and modulation
2009-07-08 by Scott S.
... No luck on VR6, the entire keyboard covers only a fourth, no matter where it is set. From the tuning without a scope URL: _13. Alternate playing
MC-202 clock probs
2009-07-07 by synthparts
Hi, I ve got a couple 202s here with clock/sync probs. MC-202 #1. Seq won t start from internal or external sync. Also on internal sync with no DIN cables
MK50242N
2009-07-07 by nickwest16
hi.i m new to this group, so please excuse my poor etiquette, I have been looking for a chip to repair a friends keyboard, and i was wondering if anybody could
Re: Crumar Orchestrator tuning?
2009-07-07 by imbuedblue
Your tuning issues are most likely due to components drifting over time. I d start by checking the voltages coming off the power supply (lower left hand corner
Crumar Orchestrator tuning?
2009-07-07 by scituate_mass
Hello, I have a crumar orchestrator that is in tune with itself, but which cannot be tuned to other instruments. While there is a pitch slider on the front,
Re: SH-101 tuning and modulation
2009-07-07 by Scott
... The Tek 465 is one of the best scopes ever made. 100Mhz passive probe would be fine. Make sure you cal the scope against your new probe when you get one.
Re: Troubleshooting an OB-8
2009-07-07 by Scott
... If you re noticing excessive heat on ICs , check the power supply rails. I had a ADCOM CD player, excessive heat on DAC chip. replaced chip but found it
Re: [vintagesynthrepair] SH-101 tuning and modulation
2009-07-07 by Scott S.
It looks like VR6 may be my friend in the tuning issue, I ll check it tonight. http://www.guerillasofsoul.com/chad/sh101/101calibrate.txt There is also a
Re: [vintagesynthrepair] Re: Troubleshooting an OB-8
2009-07-07 by Terje Winther
Hi, Thanks for the info. I have justed serviced an OB-8 that showed the same problems regarding power, and especially the bridge rectifier. All black board
[vintagesynthrepair] SH-101 tuning and modulation
2009-07-07 by Scott S.
I m working on a SH-101 that has tuning problems, and I can t seem to get the modulation to stop. I am not very familiar with operation of this, so some may be
Re: Troubleshooting an OB-8
2009-07-06 by gnw
... Thanks for the reply. I ve actually pulled the processor board on my OB-8 in order to inspect for damage in the area of the bridge rectifier that had been