Re: Cheetah MS6 Missing/Weak Notes
2006-09-19 by ferrograph632
... here: http://www.maad.net/ms6/ d.
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Re: Cheetah MS6 Missing/Weak Notes
2006-09-19 by David Monckton
Thanks Duncan your a ***STAR*** I ll start the investigation into which waveform is faulty. I have a Tech on standby but I thought it would be better to narrow
Re: Cheetah MS6 Missing/Weak Notes
2006-09-19 by ferrograph632
... missing or weak notes randomly placed on the keyboard. When I reselect the same tone the missing/weak notes move position on the keyboard. Not all the
Cheetah MS6 Missing/Weak Notes
2006-09-19 by David Monckton
Hi All I have a problem with a Cheetah MS6 snyth. Some of the tones have missing or weak notes randomly placed on the keyboard. When I reselect the same tone
OT: Two Samson monitors burnt out at once...
2006-09-17 by gil_we
One of my Samson 65a monitors has started to give distorted sound. Opening it up, I found two fried resistors. I opened the other one up so I can see what
Re: [vintagesynthrepair] Combo Organ Tech in New England?
2006-09-15 by SCOTT DAVIES
Here is a link for some techs in Mass. http://www.mitatechs.com/zip.html#MA Let me know if this helps Scott Brendan Haley wrote: Mass. ...
Re: [vintagesynthrepair] Combo Organ Tech in New England?
2006-09-15 by Brendan Haley
Mass. ... From: SCOTT DAVIES To: vintagesynthrepair@yahoogroups.com Sent: Friday, September 15, 2006 11:52 AM Subject: Re: [vintagesynthrepair] Combo Organ
Re: [vintagesynthrepair] Combo Organ Tech in New England?
2006-09-15 by SCOTT DAVIES
What state are you in? Scott Brendan Haley wrote: Asking for a friend: Does anyone know of anyone who would work on a Vox Jaguar in the New
Korg Polysix peculiar memory problem
2006-09-15 by sputnik979
Hi folks, you might remember me and my battery leakage issue. Well, we still haven t found the cause of the patches not being written to memory. TC5514 seems
Combo Organ Tech in New England?
2006-09-14 by Brendan Haley
Asking for a friend: Does anyone know of anyone who would work on a Vox Jaguar in the New England area? -brendan
Korg X-911 User Manual PDF?
2006-09-12 by Casio Rapman
Hi guys. Does anyone know where I can find a PDF of the Korg X-911 manual online? I see the schematics are here:
Re: -- Help Needed -- Farifsa Professional --
2006-09-11 by ken_kishi
Dear Matt, I used to have a Farfisa Professional. I donated it to charity years ago. Without the pedal the volume should maximum. The pedal is a
Re: Roland Sh-09 Service Manual
2006-09-09 by maschinengeist001
Some highly generous guy sent me the service manual. Thanks to everybody. Let s the surgery begins!
Moog Prodigy black knop
2006-09-05 by ooobeeone
Help, Wanted! I m looking for a black knop for my Moog Prodigy! Who can help me? Thanx, ooobeeone
Moog Prodigy black knop
2006-09-05 by ooobeeone
Help, Wanted! I m looking for a black knop for my Moog Prodigy! Who can help me? Thanx, ooobeeone
Re: What causes bad unregulated voltage on the power supply ?
2006-09-04 by gil_we
Thanks very much for your help. I first used the coil in my JX8P to fix that bad MKS-70. So now the MKS-70 is working fine and I m in the process of making the
Re: What causes bad unregulated voltage on the power supply ?
2006-09-04 by gil_we
Thanks, The voltage feeding the transistors is 5v indeed. The display works ok so far (I m also working on fixing the bad coil as well... to fit it back into
Re: Notorious Juno-106
2006-09-04 by gil_we
I detected a bad 80017 only by heat, once. The bad chip was so hot that it was clear it was the cause for the problem. All voltages main were bad too. ... no.
Re: [vintagesynthrepair] Re: What causes bad unregulated voltage on the power supply ?
2006-09-03 by John Brewer
Hi, Ok, so the voltage to the display circuit is correct so you need not worry any further about the 11 volts as this is not an issue as far as the display is
Re: Notorious Juno-106
2006-09-02 by easterleggs
yes. chip one is suspect. but see if you can pinpoint which voices have the filter cutoff problem. that problem is likely also associated with the 80017 s,
Re: Notorious Juno-106
2006-09-02 by sputnik979
So I understand that what you re saying is that this is indeed the VCA/VCF chip problem and nothing else? PS. New info: every couple of notes the filter cutoff
Re: [vintagesynthrepair] Re: What causes bad unregulated voltage on the power supply ?
2006-09-01 by John Brewer
Hi, I am home again for a while. Sorry for the delay in replying. My copy of the drawing did not come out very clear, Is that 5V feeding the two transistors
Re: Notorious Juno-106
2006-08-31 by gil_we
Have you checked all the basic things... i.e correct voltages, heated parts, etc ? I once fixed a 106 which had a bad VCF/VCA chip. The bad chip heated as hell
Notorious Juno-106
2006-08-31 by sputnik979
Hi guys, In my Juno106 there s always an audio signal on the audio_out port that is faintly audible, but strong enough to the point that it s intorelable
Re: What causes bad unregulated voltage on the power supply ?
2006-08-29 by gil_we
Thanks John, back to the list. I added the scheme for the display board to the Files section. As you can see, there s something strange - the two +7v wires at
Re: Roland Juno-60 not working
2006-08-29 by gil_we
You will have to check the users manual, I don t really know. Open it up, look for loose connectors and cables, parts that gets too warm, and anything else
Re: Roland Juno-60 not working
2006-08-28 by jnovak5
This is the re-initialization procedure? I did try this and nothing happens. When I press the Chourus Off and Choures II (last step)none of the lights display.
Re: Matrix6(r) first voice issue !! please help ! (cross-posted)
2006-08-27 by gil_we
Strange, I have one and never really used it. You can always open it up and watch how it is designed. ... times
Re: Roland Juno-60 not working
2006-08-27 by gil_we
How about a full reset ?...
Roland Juno-60 not working
2006-08-27 by jnovak5
Hi, I have a Roland Juno-60 that is turning on but nothing is happening. When you first turn the unit on the Tape, Load, lights flashes and the LED display
Octave Cat troubles
2006-08-27 by jacobcullins
I recently picked up an Octave Cat SRM, and upon recieving it in the mail found it would not show any signs of life. Suspecting a blown fuse, I opened the unit
RE: [vintagesynthrepair] Re: What causes bad unregulated voltage on the power supply ?
2006-08-25 by Gil W.
Thanks John, I don t have your regular address so I m posting back to the list... I tried to replace both D4 and Q2 (with substitutes) and got 0 voltage on the
FULL Version of P6 SM
2006-08-25 by sputnik979
Is there a mini and a full version ov service manual for Polysix ? My tech just won t stop nagging me; get the full version! get the full version cause I
ARP templates and blank sheet patch pads for sale
2006-08-22 by grw20022
maschinengeist001 wrote: Recent Activity 3 New Members 1 New Links 2 New Files Visit Your Group SPONSORED LINKS Sampler Voice
Re: [vintagesynthrepair] Roland Sh-09 Service Manual
2006-08-22 by Gareth Jenkinson
support@roland.co.uk jave always been very good to me, sending service manuals in PDF form within a day or two. cheers Gareth
Re: What causes bad unregulated voltage on the power supply ?
2006-08-22 by gil_we
Thank you ;) Well here aew the results - 1. 5v, 15v anb -15v are all ok. 2. D4 does not show an open connectivity between its legs. 3. ~ to ~ on D4 shows 11v
Roland Sh-09 Service Manual
2006-08-21 by maschinengeist001
Hi! I m looking for the Roland SH-09 service manual. Anybody has an idea where I could get it? Thanks in advance
Re: [vintagesynthrepair] Re: What causes bad unregulated voltage on the power supply ?
2006-08-20 by John Brewer
OOps,sorry!! I forgot to thank you for the scans. It is really interesting to see how manufacturers have so many different ways of doing things. John ... From:
Re: [vintagesynthrepair] What causes bad unregulated voltage on the power supply ?
2006-08-20 by John Brewer
First of all, the circuit is a bit unusual in as much as the feed for the 5v regulator circuit is taken from the +15v rail. This is ok to a point but if Q2
Re: [vintagesynthrepair] Re: What causes bad unregulated voltage on the power supply ?
2006-08-20 by John Brewer
Hi, My reply was general as I had a similar problem on another piece of kit. I will have a look at the drawing and get back to you. Best regards. John. ...
RE : [vintagesynthrepair] Re: What causes bad unregulated voltage on the power supply ?
2006-08-19 by Antoine Deschênes
bad regs, backwards bridge rectifier, bad regulator, bad rectifier, blown backwards caps, etc. gil_we a écrit : Thanks ! I uploaded the
Re: What causes bad unregulated voltage on the power supply ?
2006-08-19 by gil_we
Thanks ! I uploaded the schematics to the Files section here... Are you refering to D5 ?.... But isn t it supposed to control the DC voltage rather then the
What causes bad unregulated voltage on the power supply ?
2006-08-19 by gil_we
I got a Roland MKS70 of which the Power Supply unregulated voltage rail is too high. The schematics says there should be +7v but I read 11V when the DMM is set
Re: [vintagesynthrepair] What causes bad unregulated voltage on the power supply ?
2006-08-19 by John Brewer
I have had a similar problem on another piece of equipment. The bridge rectifier was the culprit. Can you scan and e-mail me the power supply circuit and I
Re: Not exactly looking for a synth chip...
2006-08-19 by pcbye111
Paul: If you or another member can send me the exact spec -- dimensions, material thickness, hole spacing, etc. A drawing / sketch will do. I am sure I either
Re: [vintagesynthrepair] Not exactly looking for a synth chip...
2006-08-18 by jmarie
Hi all! Paul, I d the same problem some years ago for mounting some xpanders in a rack and I built these hard to find ears by myself using aluminium corner I
Re: [vintagesynthrepair] Not exactly looking for a synth chip...
2006-08-18 by Sandra Garcia
maybe Ranger Audio? Sandra Garcia ... From: Paul Skibitzke To: vintagesynthrepair@yahoogroups.com Sent: Friday, August 18, 2006 9:31:07 AM
Not exactly looking for a synth chip...
2006-08-18 by Paul Skibitzke
This is kind of more of an external hardware search than an internal one, so I hope it isn t too off the subject. I m looking for rackmount ears for my Roland
Info and "Parts for the ARP Odyssey Synthesizer " YEAH!
2006-08-18 by Nathan McCoy
Hey if you are looking for schematics, parts, or other info for your arp odyssey check here! it has a lot of helpful stuff!
Re: SH-101 CPU
2006-08-14 by leitner6
I m not sure what exactly your problem is but I had a problem where the -5 volt supply was shorted and caused the +5 volt supply to rise to 7.3v. (voltage