RE: [vintagesynthrepair] Who can fix my Moog Prodigy?
2008-10-12 by Keith Niver
Go to mitatech.org and search for a tech close to you. Try both ways to do a state search (abbreviation and full spelling) Keith A Niver Certified MITA
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Who can fix my Moog Prodigy?
2008-10-11 by Esteban Chavez
Hello, Can anyone reccomend a good service tech to repair my Moog Prodigy. It has been a workhorse for years and recently went kaput. I believe there is an
CS80 Shelving filters
2008-10-11 by maxferfranc
Hi all As declared inthe files section there is a new image of the outputs from the Yamaha CS80 (same on other CS poly synths); leave the Vactrol for a moment:
New file uploaded to vintagesynthrepair
2008-10-11 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: Oberheim ob3
2008-10-09 by Michael Kirk
Can t help with a schematic, but with no power... 1) Check mains voltage at transformer, switch OK, fuse OK? 2) Check DC supply voltages inside, replace any
Oberheim ob3
2008-10-09 by Sean Carter
Im trying to fix and oberheim ob3 does anyone know how to get a schematic for them? This think wont even power up, so im not sure what to do first. Thanks Sean
Re: [vintagesynthrepair] Re: First message/some CS80 questions
2008-10-07 by Max Fazio
Hi Just a need tomake a thing clear on this velocity waveform: could you see if the cap+resistors output just the envelope amount in this waveform or is it
Re: [vintagesynthrepair] Re: First message/some CS80 questions
2008-10-07 by Max Fazio
Great! Thx a lot: I can see it like a complex decay envelope! It0s the first time that someone gave me this clear explaination... Also, how is the envelope
Re: [vintagesynthrepair] First message/some CS80 questions
2008-10-07 by Max Fazio
Don t mind the links, they are on the files section of the group...anyway thx for you care! M ... From: Roy J. Tellason To: vintagesynthrepair@yahoogroups.com
Re: [vintagesynthrepair] First message/some CS80 questions
2008-10-07 by Roy J. Tellason
... That link won t work -- it s one of those temporary URLs that Yahoo generates that lasts no longer than the session you re in. You need to find out what
Re: First message/some CS80 questions
2008-10-06 by paintingwithsound
You can look at the FET as a switch. It appears to be turned on very briefly by the key gate into a decaying sample and hold which should give a very fast rise
First message/some CS80 questions
2008-10-06 by maxferfranc
Hi all, this is my first message here: I m thrilled by analog circuits although I m not an expert, so I m studying the Yamaha CS80 to try and make some sort of
Re:Moog Taurus Sliders
2008-10-06 by scott frye
Another possible http://www3.alps.com/WebObjects/catalog.woa/E/HTML/Potentiometer/SlideGeneral/SlideGeneral_list1.html and http://www.nobleusa.com/slide.html
Re:Moog Taurus Sliders
2008-10-06 by analogman22
Thanks for your help Scott, it doesn t look like these will work. The ones that I am looking for have a 40mmm travel and no center detent. I would like the
Re:Moog Taurus Sliders
2008-10-05 by scott frye
Try http://www.surplusgizmos.com/Slide-Potentiometer-with-center-detent-board-mount_p_79-746.html These fit perfect for a SUNN powered mixer ( old one) Scott
Moog Taurus Sliders
2008-10-05 by analogman22
Is there a source for replacement sliders on the Moog Taurus Pedals. This is for the sliders under the glass for the programmable preset. I m looking for pot
RE: [vintagesynthrepair] "turning off" digital control on the juno 106 oscillators
2008-10-04 by Scott Nordlund
It s not possible really. The Juno 106 (as well as the JX series, etc.) uses programmable divider chips to generate a reset pulse that drives analog wave
"turning off" digital control on the juno 106 oscillators
2008-10-04 by Johnny
hey everybody. i ve been recently drooling over getting a memorymoog or prophet 5, but i don t think that s gonna happen. i have a juno 106 and i m curious if
Re: [vintagesynthrepair] Prodigy Pots
2008-10-04 by Wayne Griffin
Are they custom similar to the suboctave mix on the Micromoog/Multimoog? If they aren t custom taper it s possible to mount (carefully) standard pots to the
Prodigy Pots
2008-10-04 by bazricles
Hi all, This is a long shot, but does anyone know of a source for moog prodigy potentiometers, or a modern equivalent? Many thanks!
Solton MS60
2008-10-03 by letcista
Hello: I have a Solton MS60 that don t produce any sound and display lights on but doesn t show any information. When I press the start button the leds on the
Re: [vintagesynthrepair] Yamaha SK20 Service Manual?
2008-10-03 by Roy J. Tellason
... I have lots of manuals for sale too (including this one) but aside from my original post mentioning the web page when I first put it up, declined to get
RE: [vintagesynthrepair] Yamaha SK20 Service Manual?
2008-10-03 by timothy kosiorek
I have the sk20 manual for sale in my Ebay store.
Re: [vintagesynthrepair] Yamaha SK20 Service Manual?
2008-10-03 by Terje Winther
... I have tried to locate this as well several times. The closest I have been able to find was a SK-15 service manual. I think I have an PDF of that, but if
Warm OB-8 mltiplexers
2008-10-03 by Terje Winther
Hi all, I am servicing an Oberheim OB-8, and the multiplexers (to the left) on the two voice cards get uncomfortably warm after a while. I just wanted to check
Yamaha SK20 Service Manual?
2008-10-03 by janlappa
Does anybody have it for this mid-80 s organ-strings-synthesizer beast to copy or send by E-mail? Or point me to some link etc. I have searched net and asked
pinpointing fault on Minimoog #4827
2008-10-01 by Wayne Griffin
Ahoi- have a Mini here that will pass the A440 tune signal but has no audible signal from VCF. If I plug into the high output and crank up the volume and
Oberheim Ob-1 SEM oscillator.
2008-10-01 by SynthX SynthX
Hi, I am having some problems with two synthesizers that I am trying to fix. The first one is an Oberheim Ob-1 where the square wave on Oscillator 2 in the
Re: Juno 106 cacking out, then returning
2008-09-30 by scott frye
I just had a kurzweil with most of the keys out. Turned out that I had to resolder most of the leads on the uProcessor and the peripheral ICs All better now.
Re: Juno 106 cacking out, then returning
2008-09-30 by synthparts
Hi, while I could sell you a CPU board all those probs you mentioned are most likely due to bad 80017A VCF/VCA voice chips. :( ... exhibiting signs of ...
Re: Juno 106 cacking out, then returning
2008-09-29 by jamesguitar2000
hey doug: looks like i m interested in that CPU board after all. my board is exhibiting signs of complete cpu breakdown... losing certain voices (only
ARP 2600 pt. 3. judgment day.
2008-09-27 by r_j_d_2.phila
SHE LIVES! the problem was in the actual PSU. i dropped in the new one, soldered up, and left it on for an hour, first w/ no load, then w/ synth connected.
RE: [vintagesynthrepair] Roland D-50 Output Distorted
2008-09-26 by Scott Nordlund
I don t know if the D50 uses a single multiplexed DAC, but it seems fairly likely from what you re describing. You could try using the scope to look directly
Re: [vintagesynthrepair] Roland D-50 Output Distorted
2008-09-26 by Brinkmann Music
Already tried the MSB trim adjustment for DAC. It was clearly labeled and easily accessible. It got a little worse turned all the way counter clock wise, no
Re: [vintagesynthrepair] Re: ARP 2600 PSU, pt. 2. electric boogaloo.
2008-09-26 by syntherman
never mind on the power supply image... i knew i had a comy of the service manual somehwere... ... is there an image of the power supply showing the
Kurzweil K1000-Ensemble grand fix
2008-09-25 by Scott
I had one keyboard here that would only play thru on the B note, every octave though. Thought at first it was a comm error from the keyboard lines to the
RE: [vintagesynthrepair] Roland D-50 Output Distorted
2008-09-25 by Scott Nordlund
I don t own a D50 and have not seen the D50 service manual (there doesn t seem to be a copy floating around online), so don t trust this to be correct or even
Re: [vintagesynthrepair] Re: ARP 2600 PSU, pt. 2. electric boogaloo.
2008-09-25 by mariano elizalde
..tell you what, maybe I can locate a 14 pin lm748 locally, have some contacts :]... if I can I ll pass it to you, respect the tip series, the tip125 ($0.89
OB-8 knobs
2008-09-25 by Terje Winther
Hi all, Is there anyone here who has Oberheim OB-8 knobs they are willing to sell/trade? I need three knobs for a unit I´m having in for service. Terje
Re: [vintagesynthrepair] Roland D-50 Output Distorted
2008-09-25 by Brinkmann Music
Another discovery. In patch output mode, if output is at 2 or all way up to max, the distortion volume remains the same. Also, get intermittent digital hash
[vintagesynthrepair] Roland D-50 Output Distorted
2008-09-25 by Brinkmann Music
Anyone point me in right direction to repair distorted output on all outs- headphone, L & R. Distortion lasts until sound decay stops. Cleaned contacts and
Re: ARP 2600 PSU, pt. 2. electric boogaloo.
2008-09-25 by r_j_d_2.phila
actually, that s still helpful news. i wanted to have a spare 15/-15 bench PSU for testing, anyway, so i might still replace the parts on the old PSU. so,
odyssey oscillator problems
2008-09-24 by Patrick Milne
Does anyone know how to get the two oscillators on a mk3 odyssey to play together with the right pitch... no 1 is ok tracking with the keyboard (in semitones)
Re: [vintagesynthrepair] Re: ARP 2600 PSU, pt. 2. electric boogaloo.
2008-09-24 by mariano elizalde
sour note.... seems feasible to replace those transistors with the TI equivalents like the tip120, only has to reverse the leads since their pinout is
Re: ARP 2600 PSU, pt. 2. electric boogaloo.
2008-09-24 by r_j_d_2.phila
oh, i d never TOSS it. but with the mje1100 s running $30/pop, its not something i think is sensible to sink a bunch of money into. i ll definitely hold onto
Re: [vintagesynthrepair] Re: ARP 2600 PSU, pt. 2. electric boogaloo.
2008-09-24 by mariano elizalde
... From: r_j_d_2.phila Subject: [vintagesynthrepair] Re: ARP 2600 PSU, pt. 2. electric boogaloo. To:
Re: ARP 2600 PSU, pt. 2. electric boogaloo.
2008-09-24 by r_j_d_2.phila
thanks alot for that, i appreciate it. i replaced the mje1100 and mje 1090, and socketed the voltage regulators 723/748. i put my ear up next to the PSU as it
Re: [vintagesynthrepair] ARP 2600 PSU, pt. 2. electric boogaloo.
2008-09-23 by mariano elizalde
Hello there; the original power supply is current limited to about 600 mA so if you drop a power supply with a rated capacity of say 800 mA (0.8A) you
ARP 2600 PSU, pt. 2. electric boogaloo.
2008-09-23 by r_j_d_2.phila
so my parts came in today, and i got to soldering. disconnected the synth, dropped in the new power transistors, double checked my work, made sure no solder
TR-909 : Regular or rechargable 1.5v batteries ?
2008-09-22 by gil_we
What type of batteries should be installed on the TR909 ? Should these be rechargeable or standard type ? Thanks !