Re: [vintagesynthrepair] Re: Matrix 1000
2011-11-15 by jack
yes there is a service manual and i have it archived so will need a few days to get comp from storage to get file ... From: Steve Mays To: Vintage Synth Repair
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WTB: Arp paddle switch (Pro Soloist, pro/DGX)
2011-11-15 by evening1
Looking for one of these for a Pro Soloist, pro/DGX. thanks, john
Re: [vintagesynthrepair] Re: Arp Omni 1 master oscillator / buffer question.
2011-11-15 by Philip
The final revision of the arp omni II used electrolytics on the voices instead of tants from factory. Even they realised how problematic they were at the time.
Re: [vintagesynthrepair] Re: Arp Omni 1 master oscillator / buffer question.
2011-11-15 by evening1
Of course it s always best to replace parts w/ the original type, but the initial design choice may have been based on the limits of manufacturing processes at
Re: Matrix 1000
2011-11-15 by Steve Mays
I am curious....does anyone know if an actual service manual was ever produced for this? If so is it posted somewhere? -- Steve Mays KS4KJ 5+6 String Basses
Re: [vintagesynthrepair] Re: Arp Omni 1 master oscillator / buffer question.
2011-11-15 by jack
get the tantalum if they wanted an electrolitic they would of put 1 there and tantalum caps are not that expensive ... From: babouche369 To:
Re: Arp Omni 1 master oscillator / buffer question.
2011-11-15 by babouche369
I know; I tried to do so on the 22uF. My local dealer only had radial for this value, but once back home, I was disappointed; the footprint is far bigger and
Re: Arp Omni 1 master oscillator / buffer question.
2011-11-15 by evening1
You can use electrolytics to replace the tantalum caps and save some cash.
Re: Arp Omni 1 master oscillator / buffer question.
2011-11-15 by babouche369
Just a little follow up on my Omni repair. After numerous head-scratching, I finally bought a small digiscope for $116; without it, any attempt to fix is vain.
Re: Whats everybodys thoughts on a Korg M-1?
2011-11-15 by babouche369
Go ahead; 40$ is less than the price of all the individual parts. If it s too expensive or impossible to fix, sell it as parts. François
Whats everybodys thoughts on a Korg M-1?
2011-11-14 by thecricket38
I could pick up a Korg m-1 for 40$ this week. The problem with it is the card slots aren t working. Are they difficult to fix, are parts availible, expensive
Re: Matrix 1000
2011-11-14 by Steve Mays
Thanks for the various replies. I ve gotten the manuals and schematics and plan to try the calibrations first. As for the power supply caps...I d suspect it
Re: [vintagesynthrepair] Re: Matrix 1000
2011-11-13 by jack
thats a psu issue cuased by ripple in the filter caps which are getting hot and failing over time if it was a problem with the voice chips if they fail they
Re: Matrix 1000
2011-11-13 by narfman96
Hi Steve There is also a Yahoo group for Oberheim synths. The link is: http://launch.groups.yahoo.com/group/oberheim/ The manual will explain how to run the
Re: Matrix 1000
2011-11-13 by Quazimodo
http://soundprogramming.net/synthesizers/oberheim/oberheim_matrix_1000 Cheers, TOM
Matrix 1000
2011-11-12 by Steve Mays
I just took my Matrix 1000 out of long term storage (that means my closet). Works fine when first turned on but after a few seconds when playing a single note
Re: ARP Quadra
2011-11-10 by babouche369
Hi Martin I don t know the Quadra, but I m currently repairing an Omni. I had a couple of non-working notes in the string section (Upper Voicing Board) due to
Re: ARP Quadra
2011-11-09 by bluejinn
Also, I had an issue with the microprocessor, here is a thread regarding that. OT I know, but it is good to have some reference material in case you have the
Re: ARP Quadra
2011-11-09 by bluejinn
Do you have the service manual? This is critical. If not, you can find a partial service manual here: http://www.synthfool.com/docs/Arp/ArpQuadra/ It s
ARP Quadra
2011-11-09 by martin.morgan@bnymellon.com
HI all, My 1st post to this group - been lurking a while.. :0) Quadra question for you - Top C# (C#5) and only this one note is misbehaving On both the Poly &
RE: [vintagesynthrepair] Looking for Crumar Roadrunner 2 schematics.
2011-11-07 by timothy kosiorek
Hello:I sell a Roadrunner service manual hard copy for $15.00 + shipping,if you can t find a Pdf copy online I will be happy to accomidate you. Thank you,Tim
Looking for Crumar Roadrunner 2 schematics.
2011-11-07 by John Wieczorek
Hello friends, I just picked up a roadrunner and I d appreciate a roadmap before heading into vintage italian territory. best, john
Re: [vintagesynthrepair] Restoring a Korg Polysix
2011-11-06 by Daniel Forró
I would start in usual way - with power supply, cleaning all connectors, reseating IC s in sockets if there are any, changing RAM battery, then... I sold all
Re: [vintagesynthrepair] Restoring a Korg Polysix
2011-11-06 by Malte Rogacki
Does it have the infamous battery damage? A blinking speed LED indicates that the key assigner circuit is probably working (which also means that the four key
Restoring a Korg Polysix
2011-11-06 by ericthecat@q.com
I have had a polysix that I ve been wanting to restore or at least repair to a working state again. The power wire has been replaced and I m not sure its
(no subject)
2011-11-03 by jim finch
A well soldered Surface Mount component will have the solder wicking over the end of the pin
Re: Finding a dry joint...!?
2011-11-02 by duncan
I had a bad joint on a keyboard scanner IC in a yamaha AN1X; every fourth key wouldn t work, or something- I forget the exact symptoms. this enormous surface
RE: [vintagesynthrepair] Finding a dry joint...!?
2011-11-02 by Michael Casino
Hold the circuit board to a good bright light. You may want to use a magnifying glass and examine all the traces from the opposite side of the board. Hold the
Re: Finding a dry joint...!? THANK YOU ALL!
2011-11-01 by Quazimodo
Hey thanks to everyone for the replies...;c) I found the problem today. It was easier than I expected. I wore glasses, used a magnifying glass and also applied
Re: [vintagesynthrepair] Finding a dry joint...!?
2011-11-01 by Mike
I d agree.. Some dry joints I ve found were invisible. Maybe prod the board with a plastic pen to get an idea where the dry joint is located, then resolder
RE: [vintagesynthrepair] Finding a dry joint...!?
2011-11-01 by timothy kosiorek
it might be tedious but I go through and resolder all solder points,it takes a little time but can be well worth it, a lot of times the dry/cold solder joint
RE: [vintagesynthrepair] Finding a dry joint...!?
2011-11-01 by José Pereira
Hello. Try to use a magnifying glass and a strong light to check the circuit board and the soldering joints of the components. Using a multimeter, check if the
Finding a dry joint...!?
2011-10-31 by Quazimodo
Hi guys, Trying to fix a dead DX100 here. I have isolated the problem to a dry joint or open circuit somewhere. If I slightly twist or bend the main circuit
Re: Yamaha CS5 problem
2011-10-31 by ahassine@nettilinja.fi
Thanks!!! I am now waiting for some components to arrive and then the repair will proceed. The transformer should be OK, it seems to be the circuit controlling
Moog Micromoog: Couple keys distort
2011-10-29 by Boddington
Hi everyone ~ quick question: I ve got a Micromoog that s in pretty good shape but I notice that one or two keys are audibly more distorted that the rest. I
RE: [vintagesynthrepair] Re: Yamaha CS5 problem
2011-10-19 by Brian
Ami you don’t need an electrician you need an electronics engineer. Believe me they are not the same by any stretch of the imagination! Regards Brian G3OYU
Re: [vintagesynthrepair] Re: Yamaha CS5 problem
2011-10-18 by oscillator909@web.de
Hi, if there any problems with it, there is another reason : exchange the faulty power supply with a new one, there are several pre build powersupplys with +/-
Re: Yamaha CS5 problem
2011-10-18 by ahassine@nettilinja.fi
Thanks guys for your insights! Yes, I must go to the workshop and see myself...I´ll take your ideas to the electrician and we´ll have another look...
Anyone Replace/Repair Roland JV-50 Floppy Drive?
2011-10-18 by Mr LongWind
I recently got a Roland JV-50 with a broken floppy drive. When accessed it just spins round and it s power led lights up. The original drive is practically
RE: [vintagesynthrepair] Yamaha CS5 problem
2011-10-18 by Brian
Hi Ami I too would be most surprized if the IC was the cause of fuse blowing. The device appears to be a 14 pin DIL switch and even if it were short circuit
New file uploaded to vintagesynthrepair
2011-10-18 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 :
New file uploaded to vintagesynthrepair
2011-10-18 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] Yamaha CS5 problem
2011-10-18 by oscillator909@web.de
Hello, sure with the ta ic ? Often the transformer goes dead. If it the ic, try partminer to get them. the power supply is very easy , only -/+ 15V with
Yamaha CS5 problem
2011-10-18 by ahassine@nettilinja.fi
Hi All!!! I have a Yamaha CS-5 monosynth and it blows the fuse all the time. Local electrician inspected it and said that it´s the TA 7179P (IC, 14 pins),
RE: [vintagesynthrepair] Hohner Stringer help?
2011-10-18 by Paul Rak
I had a Stringer years ago. Even the guys at Hohner couldn t help. I eventually sold it on. Hohner did send me some schematics for a similar model, though.
Re: Jupiter 6 out of tune. Fixed
2011-10-17 by Nicolas
Hi, I was able to fix the problem by making the adjustments on the bender board like described in the service manual. Thank you! Nicolas
Re: Jupiter 6 out of tune. Bender problem
2011-10-17 by Nicolas
Hi, I just found out that the synth is out of tune when the bender function is turned ON. Anybody is familiar with this problem? Nicolas
Re: Jupiter 6 out of tune
2011-10-17 by Nicolas
I have the service manual and there is no tuning procedure in it. There is an auto-tune function on this keyboard. Do you know anything about this circuit?
RE: [vintagesynthrepair] Hohner Stringer help?
2011-10-17 by timothy kosiorek
Hello Bob:what model is it, they have a few string machines and I have the service manuals for them but to look them up I need the correct model number.Tim K.
Re: Jupiter 6 out of tune
2011-10-17 by Quazimodo
Nicolas - if everything seems OK and all tht is wrong is that the master tune pot is off centre then you probably need to centre it and then go through the