Re: Moog Rogue pitch bend
2013-07-11 by duncan
have you got the schematics? all of the pitch adjustments are summed onto the 1st input of ICU2A. the pitch wheel has +12 & -12 connected to its two ends, &
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Moog Rogue pitch bend
2013-07-08 by Nicolas
Hi everybody, Is there any way to adjust the range of the pitch bend on a Moog Rogue? I would like to adjust so that it bend up to one octave when when it is
Re: [vintagesynthrepair] WTB: Yamaha EX5 Manual Set
2013-07-06 by 65 Lotus
Want the original manuals, not reprints, thanks. ... From: Roger J To: vintagesynthrepair@yahoogroups.com Sent: Saturday, July 06, 2013 12:14 PM Subject: Re:
Re: Roland MC-4 issues with CV Output
2013-07-06 by monads
Thanks Scott. I ll take a look. I can confirm it s not the power supply lines. There is an onboard oscillator (Toyocom 8.0000) but I don t think it s the
Re: [vintagesynthrepair] Arp PrDGX parts?
2013-07-06 by Terje Winther
Yes, they are really unobtainium. Fortunately, this is just a resistor network, and the resistor values are in the service manual. You will need a lot of
RE: [vintagesynthrepair] WTB: Yamaha EX5 Manual Set
2013-07-06 by Lorne Hammond
I got the service manual off the net as I am fixing one for a friend. I believe the pdfs are available free from Yamaha. But you want paper copies no doubt.
Re: [vintagesynthrepair] WTB: Yamaha EX5 Manual Set
2013-07-06 by Roger J
http://download.yamaha.com/search/product/?site=usa.yamaha.com&language=en&category_id1=16277&category_id2=16381&category_id3=&product_id=623450 ... ask...!
WTB: Yamaha EX5 Manual Set
2013-07-06 by 65 Lotus
Sort of off-topic, but if you don t ask...! Looking to purchase a set of the original manuals for the Yamaha EX5, the Owners Manual and Data Set List. Thanks,
Re: Roland MC-4 issues with CV Output
2013-07-06 by scott frye
Check ALL power supply lines to see if they are stable FIRST. Check oscillator stability anywhere there IS one. Either one of those may give you a clue --
Re: Arp PrDGX parts?
2013-07-06 by scott frye
That is a fixed resistor network ...You can find the values used in the schematic diagram and THEN buy some 1/8 watt leaded resistors to make a new network --
Roland MC-4 issues with CV Output
2013-07-06 by monads
Has anyone experienced issues with fluctuating voltage on the CV Outputs? It s the CPU board (confirmed by swapping/testing another board). It doesn t output
Arp PrDGX parts?
2013-07-06 by Jim Blair
Hey folks, I have an unhappy ProDGX that s been in for repair. There appears to be a faulty chip that goes by the name CTS resistor network B-2701-011 . The
elka 2200 restoration schematic needed
2013-07-05 by skipwang
hello group, i am new and happy to be a member. my current project is restoring an elka 2200 ( panther duo combo) i need a schematic and also like to have a
Re: Moog Source membrane switches
2013-07-04 by Nicolas
Hi, Thanks for the information. I sent them a message and wait for a response. I was wandering if I could remove the front cover and try to repair the
Re: [vintagesynthrepair] Boss DR-55 write mode problem
2013-07-04 by Nick Bell
I put in a new 4011UBP today but the problem is still there. From initial voltage measurement s (measuring at collector of Q15 & 16) it looks as though the
RE: [vintagesynthrepair] Re: Moog Source membrane switches
2013-07-04 by Lorne Hammond
Sometimes I get too subtle. My reading of them is this: you have to decide whether you want to risk throwing the money away and buy one at their site and wait
Roland MPU101 1/8 jack replacment?
2013-07-03 by pushwithlegs
hey all, I m looking for a replacement for one of the 1/8 jacks on a Roland MPU101 midi/cv converter. the plastic mounting piece that mounts on the circuit
RE: [vintagesynthrepair] Moog Source membrane switches
2013-07-03 by Lorne Hammond
Chipsforbrains/technology transplant, which may or may not have gone out of business remanufactured that front membrane. Try sam at syntaur.com in case he
Moog Source membrane switches
2013-07-03 by Nicolas
Hi everybody, I m trying to repair a Moog Source that has a few problems. So far I was able to fix the problems by reinstalling a new 5 volts regulator and
Re: [vintagesynthrepair] Boss DR-55 write mode problem
2013-07-02 by Nick Bell
Thanks guys, I had a few 4011BE s lying around & so used that - so ill order some unbuffered ones & see how I go. Will get/make myself a logic probe as well!
Re: [vintagesynthrepair] Boss DR-55 write mode problem
2013-07-01 by Paul Rak
Thanks Dennis! I couldn t remember the codes as it s been a while. Paul ... -- There are only 10 kinds of people in this world: Those who know binary, and
Re: [vintagesynthrepair] Boss DR-55 write mode problem
2013-07-01 by Dennis Matana
you must use 4011UB or UBE and not 4011B, so use the unbuffered version, the buffered one doesnt work in this machine... 2013/7/1 Paul Rak
DCO2 issues with JX-8P
2013-07-01 by zaphodbetamax
I have recently repaired a random reboot concern on my JX-8P by replacing the 7805 voltage regulator, and resoldering any possible cold solder joints in the
Re: [vintagesynthrepair] Boss DR-55 write mode problem
2013-07-01 by Paul Rak
I ve had two different codes (can t remember what they were..) both from maplins and sold as 4011s - one worked 100%, the other didn t. It was as if it s
Korg PS-3100 edge connector issues.
2013-07-01 by sinthinoakland
Hi all. I have a Korg PS 3100 I am replacing the edge connectors on, as they all split open eventually, and I was wondering if anyone had photos of one that
Re: [vintagesynthrepair] Boss DR-55 write mode problem
2013-07-01 by Christian Oncken
two tips.. 1) if you drop by your local electronics shop and ask for 4011s make sure they give you 4011s and NOT 4001s. Having to drive 30+ miles to exchange
Re: [vintagesynthrepair] Boss DR-55 write mode problem
2013-07-01 by Paul Rak
Start with the 4011 I ve repaired a LOT of these machines where that s all it needed. Needs to be the right kind of 4011 though.
Boss DR-55 write mode problem
2013-07-01 by Nick
Hi, I wonder if anyone could give me some help with this little drum machine. Play mode seems to work fine & it will start & stop ok & everything sounds ok.
Re: Roland D-5 Issues
2013-06-19 by phammer123
Thanks sorry for the late reply had trouble logging in again. I saw some tactile switches on Mouser. They were much cheaper than getting them from Roland. Does
Re: YAMAHA SY77 freezes
2013-06-19 by Royce
Hi moe ... The SY77 has 3 CPUs. A central one for the display, the wheels and rotary encoder and co-coordinating the two others as well as the M3 chips on the
Re: [vintagesynthrepair] Roland Juno 106S - note stealing ??
2013-06-18 by Hugh Vartanian
I would say clean all the chips. If there is still leak thru, post again. I found 100-200k or so resistors on the vca input to the chips (to gnd or pwr, i
Re: YAMAHA SY77 freezes
2013-06-18 by m.sislack
Hi Royce, another detail i may not have mentioned yet is that when powering up the sequencer leds flicker for a shorter or longer period of time. And only
Re: [vintagesynthrepair] Roland Juno 106S - note stealing ??
2013-06-18 by NoëlBuhagiar
Ok.. put IC13 & IC11 in acetone for about 1 week 13 could be done but 11 was stubborn so I replaced the solution and put back in for 1 or 2 days then ok. I
Re: YAMAHA SY77 freezes
2013-06-18 by Royce
Hi moe ... Maybe. Both the switches/leds, foot switches and the keyboard are scanned and controlled by a separate micro-controller (IC137 on the circuit
Re: YAMAHA SY77 freezes
2013-06-17 by m.sislack
Hi Royce, removed the DM2-board and - as you predicted - the SY77 can be used as midi-controller. But even while the DM2-board is removed it freezes when one
Re: Envelope problem, pops and "sensitive" pots (Crumar Composer)
2013-06-17 by Mikael
I found a broken trace (at a connector) that stopped the sutain-signal arriving at the CEM3310. The brake was impossible to see, even with a magnifying glass.
Re: [vintagesynthrepair] Roland D-5 Issues
2013-06-14 by PeWe
Try / observe Vintage Planet too ... Ebay shop Vintage
Re: [vintagesynthrepair] Roland D-5 Issues
2013-06-14 by Roger J
I did a D5 recently. Roland US has no replacement buttons. The real issue is the switches under the button, called tac switches, short for tactile. They
Re: [vintagesynthrepair] Thomas organ from the 70s
2013-06-14 by Roger J
Got a model number? Thomas of that era used tone generator that were basically flip flops or divide by two. Say high A was 1760 Hz, it was feed to a
Thomas organ from the 70s
2013-06-13 by country_gentleman_tx
HI, I have been here some time ago and found great help on my Hammond B3. It is not playing GREAT! My wife has a Small Thomas from I think the 70s. She got
Roland D-5 Issues
2013-06-13 by phammer123
Hi, I recently bought a Roland D-5 for $80. It has issues. I have to hold down the patch buttons, for a few seconds, for the patch to kick in. Also one button
RE: [vintagesynthrepair] Re: Linn Drum Transformer
2013-06-13 by John Rose
Just one thought if you really get stuck, if there is the space you might get away with 2 separate transformers possibly toroid s as these tend to be more
Re: Korg Polysix dead voice
2013-06-13 by Nicolas
Hi, You re a genius. I followed you re instructions and I found out there was no signal on pin 1 of IC25 but there was a signal on pin 1 IC29 I replaced the
[vintagesynthrepair] Re: Korg Polysix dead voice
2013-06-13 by Malte Rogacki
This calls for a more thorough debugging. Set the front panel controls as follows: - Cutoff 0 - Resonance 0 - EG Intensity 0 (center) - Key Track 0 Now check
Re: Korg Polysix dead voice
2013-06-13 by Nicolas
Yes, the signal is entering IC23 and I ve got CV for all the voices. The envelopes work well on all the voice well on all the voices.
[vintagesynthrepair] Re: Korg Polysix dead voice
2013-06-13 by Malte Rogacki
Is the signal actually entering IC23? Have you checked with a scope if the CV for all six voices is there? What enters pin3 of IC23 is not just the keyboard
Re: Korg Polysix dead voice
2013-06-13 by Nicolas
Hi, Thank you for replying. I checked the ICs that you mentioned and they seems to be working fine. What I don t understand is that the KBD Track signal enters
Re: [vintagesynthrepair] Re: Korg Polysix dead voice
2013-06-13 by Malte Rogacki
If single voices are affected the problem never resides with the CPU board. Problems with the CPU board affect all voices identically. So we have various
Re: [vintagesynthrepair] Re: Korg Polysix dead voice
2013-06-12 by John Henson
Hi Nicolas, I am not claiming to be a guru but I had a difficult Polysix here last weekend which couldn t read the Pot s correctly and did all manner of
Re: Korg Polysix dead voice
2013-06-12 by Nicolas
Hi, After investigating a little bit more on this Polysix, I found out I have a second dead voice. I can get some sound from these voices but it depends of the