Re: Minimoog D pitch drifting
2012-06-28 by Gil
Thanks, I m supposed to get it in, in a few days, so I assume I will have a better idea what s going in there... That particular one if told to be the first
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Re: Minimoog D pitch drifting
2012-06-28 by Quazimodo
On my Mini these crimped connectors DID affect all oscillators equally! In fact, the tuning drifted - but also the SPAN (Scale?) drifted, again equally for all
Re: [vintagesynthrepair] Re: Minimoog D pitch drifting
2012-06-28 by Malte Rogacki
No, no, no: You re not supposed to solder the connector to the PCB, just the wires to the connectors! The stock ones are only crimped. But before you jump to
Re: [vintagesynthrepair] Re: Minimoog D pitch drifting
2012-06-28 by Roger J
Okay, the PCB edge connectors. I have always just cleaned the copper with a type writer eraser and a film of Cranolin to retard future oxidation;
Re: Minimoog D pitch drifting
2012-06-28 by Quazimodo
The connectors the boards push into when fitted and pressed home.
Re: [vintagesynthrepair] Re: Minimoog D pitch drifting
2012-06-28 by Roger J
Quaz, What do you mean by FLAGS? ... Quaz, What do you mean by FLAGS? From: Quazimodo To: vintagesynthrepair@yahoogroups.com Sent:
Re: [vintagesynthrepair] Minimoog D pitch drifting
2012-06-28 by Roger J
There are basically two Minis, the later Moog (Norlin then owned Moog) being more adjustable and tracks better on the hi end, because of the extra VCO
Re: Minimoog D pitch drifting
2012-06-28 by Quazimodo
Gil, Sounds to me like you need to solder the flags onto the wires (they are only *crimped* as standard) on certain (selected) connectors. I have some notes
Minimoog D pitch drifting
2012-06-28 by Gil
I m handling a friend s mini, which acts strangely. The overall pitch (of the entire machine) will change suddenly, up and down, not to far from the correct
Re: [vintagesynthrepair] Re: Alesis QS8 Note E 2 loses volume after 1 to 3 presses.
2012-06-27 by Roger J
Replace the contact strips, they are the same as any Fatar keybed. Fatar only made the keybed assembly. Modern keyboards use a X/Y matrix or row and column
Re: [vintagesynthrepair] Re: Alesis QS8 Note E 2 loses volume after 1 to 3 presses.
2012-06-27 by brian dampier
Hey Fran, The first thought when I bought it was to reset it and I have done that a couple of times. I should mentioned that. But thanks for the input.( BTW I
Re: Alesis QS8 Note E 2 loses volume after 1 to 3 presses.
2012-06-27 by narfman96
Another quick thing to try is reset your QS. I have seen them do really weird things. You would swear (literally) that the synth was toast and the reset would
Re: [vintagesynthrepair] Alesis QS8 Note E 2 loses volume after 1 to 3 presses.
2012-06-27 by brian dampier
Nope, no stuck notes but the diode sounds like a place to look. Thanks for the input. ________________________________ From: jammie
Re: [vintagesynthrepair] Alesis QS8 Note E 2 loses volume after 1 to 3 presses.
2012-06-27 by jammie
bad diode for that key on the contact board is the only surgestion i can give as you are not having this problem on any other key do you also get stuck notes
Alesis QS8 Note E 2 loses volume after 1 to 3 presses.
2012-06-27 by brianmann01
Hi Everyone, Its an ALesis QS-8 weighted keys. ( I think Fatar is the maker). It works perfect except that E2 will lose volume after being played 1 to 3 times
ROLAND G-1000
2012-06-23 by roydavies65
Hi searching for a factory reset disk (or copy) for Roland G-1000 I have restored all back to working condition but need the disk to have it set right. Roy
Re: Not exactly a synth, but ....
2012-06-22 by Scott
... Hi... Seems to be nothing on the web but being a tech of 30 + years , I would say; Find out what electrolytic capacitors are on the power supply and change
Not exactly a synth, but ....
2012-06-22 by Geoff Wood
Electrokey EWP671-LH electric piano. Seems at a glance to work on similar principle to Rhodes (rather than Wurly, below). Anybody heard of it (Google hasn t,
Re: Korg Delta ADSR Problems .
2012-06-13 by Quazimodo
Hi Arnar, Check IC4 (4007 cmos) or the +15volts to it via R66. This IC seems ADR related on the schematic. Sustain seems seperate from the rest via the D+
Korg Delta ADSR Problems .
2012-06-12 by plat@simnet.is
Im working an a Korg Delta with ADSR problems. It seems that only the Sustain is working , both for the filter and VCA. Any ideas before I start poking around
Casio CZ-101 fault
2012-06-09 by valvusmusicus
Hi All My CZ has died. On both batteries and psu-most of the LED;s light, no functions from the buttons, no sound. Top row of LCD screen shows very dim blocks.
Re: [vintagesynthrepair] Re: ARP Axxe..Issues
2012-06-08 by evening1
I suspect the slide pots as well and possibly intermittent solder joints. They are a pain to remove and disassemble for cleaning but it can be done. jmw.
Re: ARP Axxe..Issues
2012-06-08 by The Wizard
I ll second #1 and #2 below, and add: 3) Be VERY suspicious of the sliders! Sliders on pretty much all the named (as opposed to numbered) ARP s will likely
Re: ARP Axxe..Issues
2012-06-08 by alesisfusion8hd
I don t have any schematics, but I would: 1) check PSU delivers all the required voltages. Adjust if necessary. 2) check the control voltages driving the VCF
ARP Axxe..Issues
2012-06-08 by Scott
Hi... New to the shop Arp axxe 2310-631 OSC s are ok, Noise gen OK, S+H ok VCF ..Not so much... VCF Freq and ADSR only want to work at Max excursion of
Roland PG-200 problem
2012-06-08 by Mark Wallis
Hi folks, i have a JX3P in with PG200 programmer. One of the 100uF caps had blown, all electrolytics have been replaced and voltages are correct throughout the
Re: ARP Odyssey Fuse Holder?
2012-06-06 by The Wizard
You re right -- that fuse IS soldered to the PS board, and those caps on the ends are part of the fuse. So first off you ll need a fuse of that type to
Re: ARP Odyssey Fuse Holder?
2012-06-06 by Alexis V. Rogers
There s no holder. It s a leaded fuse. Search for a 250V 1/8A (.125A) fuse with axial leads.
ARP Odyssey Fuse Holder?
2012-06-06 by Paul Krull
I spent my weekend digging through some synths that have not been used in a while and came up with lots of troubles on various synths. About the only repair
Re: [vintagesynthrepair] Korg backlight problem
2012-06-06 by Roger J
Around 130VAC +/- 10 would be typical at 350 to 450Hz. is what I would expect to see. No load will be higher than loaded by a few. ... Around 130VAC +/- 10
Re: [vintagesynthrepair] Re: Korg backlight problem
2012-06-06 by jammie
yes the transistor could be the problem but also the inverter coil you should be getting an ac voltage from the inverter coil the transistor is a switching
Re: Korg backlight problem
2012-06-06 by Quazimodo
Thanks for the reply. Is there any way of confirming that the little transformer is shot. Should it be o/c with my meter? There is also a small transistor
Re: Korg backlight problem
2012-06-05 by narfman96
You should have around 100 volts ac on the plug coming from the inverter. It can be quite a bit higher if there isn t any load. Plus you should be able to hear
Korg backlight problem
2012-06-05 by Quazimodo
Hi guys, I am looking at a Korg Wavestation EX with currently no backlight. I bought a new backlight foil and installed it - but still no joy. I checked to see
Re: [vintagesynthrepair] B30 Clef Microsynth
2012-06-02 by plat@simnet.is
Thanks mate ! Really hard to find and Id love to get it up and running :) Cheers Arnar ... Frá: Mark Wallis Til: vintage
RE: [vintagesynthrepair] B30 Clef Microsynth
2012-06-02 by Mark Wallis
A friend of mine has one of these and also has the schematics- I ll see if I can get hold of copies for you. Best whooshes, Mark To:
B30 Clef Microsynth
2012-06-02 by plat@simnet.is
I just got a B30 Clef Microsynth and Im looking for the schematics. They were originally printed in Practical Electronics magazine between June and August 1982
Re: Heres an off the wall one!
2012-05-29 by duncan
I used the smaller one for a while- still got it somewhere. I recall being disappointed with the size of the hard drive, but then my band tended towards longer
Re: [vintagesynthrepair] PPG Wave 2.3 power supply restoration (working, now for the other repairs :-)
2012-05-26 by jammie
try checking the diodes on the keybed i had the same problem on 2 esq1 keybeds there were a few shorted diodes and when you pressed certain keys they would
Re: [vintagesynthrepair] PPG Wave 2.3 power supply restoration (working, now for the other repairs :-)
2012-05-26 by Adrian Corston
Thanks Kris and others, I replaced the bridge rectifier and cleaned all the gunky flux off the +5V power supply board soldering; now I have good power but some
Re: ARP Odyssey II no sound
2012-05-25 by Alexis V. Rogers
Thanks. That did it. There was a short in Q1.
Re: [vintagesynthrepair] PPG Wave 2.3 power supply restoration
2012-05-25 by hans wurst
hi adrian, in my particular case at least one of the diodes was broken, so i missed one half-wave. the voltage regulator and the electrolyte had to work very
Re: [vintagesynthrepair] PPG Wave 2.3 power supply restoration
2012-05-25 by Adrian Corston
Hi Kris / Hans, Thanks for your email. Unfortunately I m just back from picking up a MIC BR106 848 (10A 1000V) and only just saw your email. What s the worst
Re: [vintagesynthrepair] PPG Wave 2.3 power supply restoration
2012-05-25 by hans wurst
use a slightly bigger one; they are known to be a underrated in the ppg waves had kind of a similar problem with mine and replaced it with a 15A (though i had
Re: [vintagesynthrepair] PPG Wave 2.3 power supply restoration
2012-05-24 by Adrian Corston
Thank you John & Colin, I will let you know how it goes! Cheers, A.
RE: [vintagesynthrepair] PPG Wave 2.3 power supply restoration
2012-05-24 by John Rose
Looking at the data sheet it is a fairly standard bridge rectifier so an alternative would be easy to find, just go to your local electronics store and ask for
Re: [vintagesynthrepair] PPG Wave 2.3 power supply restoration
2012-05-24 by butterfield colin
Hi there,unless physical size is an issue there should be no problems replacing with a similar spec diode,I ve done this often in the past on many psu s and
PPG Wave 2.3 power supply restoration
2012-05-24 by eidorian_aladan_net
My PPG Wave 2.3 passed away recently (while I was playing it - most annoying :-) The AC fuse blows unless I have the +5V power supply board disconnected form
RE: [vintagesynthrepair] Re: ARP Odyssey II no sound
2012-05-21 by Lorne Hammond
Tants or transitor failed? The 4075 is around an a good hot substitute if needed. It is often scrounged out of lesser arps. JL put one in my oddy rev II and
Re: [vintagesynthrepair] Re: ARP Odyssey II no sound
2012-05-21 by jammie
what revision vcf as theres a few different models of the submodule check the transistor pairs ... From: Alexis V. Rogers To: