Email for a price and availability on any service or owners manual or phone / fax +44 (0)1702 546195. Just type Hammond ad the number, nothing else, it'll only limit results, and see what comes up. You never know. It's good that you have a multimeter because you could actually probe the voltage at certain reference points. But if only we knew where to look. That's why the schematic is so important.

Hey man, It sure does. There are a few of these IC chips, and i'm just 'assuming' the one closest to the connector i mentioned earlier is the one which is 'out' (if it really is dead). I tried to find information on the net about this organ, but it seems it's quite obscure - it's not a 'big' Hammond model. I just found one guy reviewing it and not really loving it. If you look at the first attached picture, you can see IC1. On the top left of this picture, the white connector is the one i was talking about - it controls the keys i was talking about - the C's, the B's, and the E's i think just on the top section.

I think the brown board controls the bass section. Reseating this connector makes no difference. Unplugging it completely actually makes no difference other than completely silencing the pathetic 'half' notes that are shown in the video. If this is IC dead, what should i do? I do have a multimeter, but have no idea which setting i should use to test this? I'm not really very good at electronics, but am willing to give it a go Many thanks! Hey man, It sure does.

There are a few of these IC chips, and i'm just 'assuming' the one closest to the connector i mentioned earlier is the one which is 'out' (if it really is dead). I tried to find information on the net about this organ, but it seems it's quite obscure - it's not a 'big' Hammond model. I just found one guy reviewing it and not really loving it.Not many of these IC organs are loved. The sound of the tone generator is what makes the classic sound we all love. Subtractive synthesis, whcih is the basis behind solid-state tone generation, like all IC models, cannot generate perfect sinewaves (okay, near-perfect sinewaves) as the mechanical capacitive-coupled tone generators in the B, C and L series.

Anyway long story short, these ICs take the top octave notes and divide them as name implies, into the lower octave notes. They are basically logic divide-by-two functions like a 74193. Vmware Esxi 5 Serial Keygen.

The TOP OCTAVE notes are usually generated by a master oscillator chip, (which in your case, could be partially defective but I doubt) which would be centrally located among the other ICs. The silkscreening on the pcb should say something like, 'Master OSC generator' or 'MASTER something'. Sorry, I'm off-topic here a bit.

OK, anyway, according to your description of 'half-dead notes', this corresponds to what one would hear if the limiting diodes were not biased properly(one pair of diodes per key), but they are all commonly biased so the diodes, nor the diode power supplies are the problem. So the next culprit is the divider chips. I wasn't able to read the numbe ron the chip, it seemed to start with a 7, but after that, I don't know.

Chances are that you'd find one of these ICs is extremely slim. But don't give up just yet. Try to find the service manula. You havent' told us the proper model number I am sure tit was not the numeric name you gave us before. There used to be a man around Ottawa named Mr Cheatley who serviced these, but I think he is no longer doing this.

So, where are you located? If you look at the first attached picture, you can see IC1. On the top left of this picture, the white connector is the one i was talking about - it controls the keys i was talking about - the C's, the B's, and the E's i think just on the top section.

I think the brown board controls the bass section. Reseating this connector makes no difference. Unplugging it completely actually makes no difference other than completely silencing the pathetic 'half' notes that are shown in the video. If this is IC dead, what should i do? I do have a multimeter, but have no idea which setting i should use to test this? Teesri Manzil Movie Songs Free Download here.

I'm not really very good at electronics, but am willing to give it a go Many thanks!Like I said in the previosu chapter I wrote (sorry ) finding an IC like this will prove to be difficult and time-consuming and this is coming from the type of guy that will not throw away anything and try to fix anything. But the reality is, this isn't an IC that you were able to buy at the store, it was made only for Hammond, in quantities sufficient for building the organs and then few hundred replacements. The only places who had the replacements were the authorized service centres. Needless to say they're all long-gone. But, but, you might still get lucky. If you can just read the number on that chip, look for it on the internet.

Just type Hammond ad the number, nothing else, it'll only limit results, and see what comes up. You never know. It's good that you have a multimeter because you could actually probe the voltage at certain reference points. But if only we knew where to look.

That's why the schematic is so important. Until next time, 2N1305. 1.10.1 How to Clean Key Contacts Three steps are mentioned in the Service Manual for progressively bad cases. First, try striking the offending key 15 to 20 times in a rapid staccato manner to dislodge the dust particles and to clear the contacts.

If this procedure does not dislodge the dust particles, adjust the busbar shifters. The busbar shifter for the upper manual is a slotted shaft about 1/2' in diameter, protruding about 1/4' from the rear surface of the upper manual assembly. It is located behind the mixing transformer. The lower manual adjuster is located in the corresponding location on the lower manual. The shifter for the pedal assembly is located at the low end of the pedals.

Turn the proper busbar shifter about two turns in either direction. This operation permits the key contacts to strike a new position on the busbar and should free all contacts of accumulated dust particles. If, in extremely stubborn cases, the procedure above does not dislodge the dust particles, use a board to depress one octave of notes (or the offending key) and then adjust the busbar shifters holding the key(s) down. A warning about procedure (3) was issued in a Keyboard article, Nov. 'This is extremely dangerous,'.

'and should never be done by anyone except a technician who knows that the busbars are in absolutely perfect condition. If the keys are worn enough to have notches in their contacts, running the busbar back and forth against depressed keys can saw those little contact wires in half.' Also, the preset keys are implemented similarly to regular keys, with the same type of key contacts and so forth. So if you choose to adjust the busbar shifter, as (2) and (3), be sure that no preset keys are latched down, else the same damage could occur as in number (3) above. Euh, that's the IC number you're talking about?

Are there any other numbers on it? Just in case, so you know, it is absolutely technically possible to make a replacement using current TTL ICs. But not without making an elaborate printed-circuit adapter board to hold those ICs in a pin configuration equivalent to the original IC. I somehow doubt that key contacts could all be dirty and non-functional on all the same notes in each octave.

But let's not go there right now. How much time and effort are you willing to invest in this? That's the question. Euh, that's the IC number you're talking about? Are there any other numbers on it?

Just in case, so you know, it is absolutely technically possible to make a replacement using current TTL ICs. But not without making an elaborate printed-circuit adapter board to hold those ICs in a pin configuration equivalent to the original IC. I somehow doubt that key contacts could all be dirty and non-functional on all the same notes in each octave. But let's not go there right now. How much time and effort are you willing to invest in this? That's the question.

In terms of how much time and effort i'm willing to invest - well i'm a little worried as, as far as i'm aware this isn't really a 'very good' organ anyway, is it? I am not an organ player (that's what she said etc), but if someone is giving away a Hammond, you better be sure that i'll grab it! It was working fine (well the top section) when he gave it to me.

For a week:-) I don't really know how much time/effort it's worth - i certainly don't have any electrical/technical skills that can really be applied in this regard. I'd essentially have to take it to someone to sort it.

Has anyone used one of these specific models before? Afaik it's just got 'stage II rhythm' written on it.

I looked on the net and found someone currently on eBay UK calling it a 'SERIES 123-2 SERIES 2 RHYTHM'. Is it worth the effort? It certainly seems like too 'big' an item which is too old (and has 'Hammond' written on it!) and classy looking to just throw into the tip! But i certainly don't want it if it's just a matter of time before the other keys start dying.

It takes up far too much valuable space to be useless! I just got it as it'd be fun to stick a mic in front of it for some instant 'dirty', live sounds.

Really appreciate some sage advice. I would not invest any time in this organ. Transistor Hammonds have zero value because they sound.

Crap, or at best nothing like a tonewheel type. They are also very unreliable as you seeing. Edit: 'Stage II Rhythm' is probably the name of some optional drum machine module, not the model of the organ.

As for 'if it's Hammond, grab it' I would qualify that by saying only if it's tonewheel or got a built in Leslie.ah, just saw your edit. Understood on the 'hammond' thing. Yes, it has a drum machine in it. It's essentially crap, but kinda fun for practicing. Can you tell me where to look to find the exact model name of the organ then?

I was planning to use it for 'crap sounds', but at least i can free up some space if i get rid of it. Am i literally supposed to take this to the dump? It looks to cool to trash! There are a couple of ways to make it sound better. And the reason Hammond didn't do it is because the majority of the people who were going to buy it wouldn't really care.

That being said, if you add a couple more resistor-capacitor filter stages to each note, you can smooth out the sound a little more, which will bring it closer to a sinewave. But you'll never get additive synthesis, which I was referring to earlier, on these organs, because they generate squarewaves that are then divided into other square waves of different frequencies. You could sell it on ebay for parts. Mine is better. I got upright piano for free on Craigslist; RCA Victor console for free on Craigslist; integrated amp for free on Craiglist; 8' Pioneer full range speakers from my friend on Burning Amp Festival; and made a docking station for Yamaha synthesizer.

It sounds much better than that Hammond with transistor square wave frequency dividers. Also, it has attack and decay, unlike electrically clicking Hammond keys; it simulates many other instruments, can play accompaniment, and even Sustain pedal works: I put a switch under original piano's pedal.

Aeolian Hammond BA player organ with Hammond tone cabinet (1938) The is an, invented by and John M. Hanert and first manufactured in 1935. Various models were produced, which originally used to generate sound via, where component waveform ratios are mixed by sliding switches called and imitate the pipe organ's registers.

Around 2 million Hammond organs have been manufactured, and it has been described as one of the most successful organs ever. The organ is commonly used with, and associated with, the. Contents • • • • • Tonewheel organs [ ] Tonewheel organs generate sound by mechanical toothed wheels, that rotate in front of electromagnetic pickups. Each tonewheel assembly creates tones with low harmonic content, close to a sine wave. Inside the coil is a permanent magnet. As the teeth of the tonewheel pass by, the strength of the magnetism changes—when the tip of a tooth is closest to the tip of the magnet, the magnetism is strongest. As the magnetism varies, that induces an alternating current (AC) in the coil, which becomes one of the frequencies used in harmonic synthesis.

Image Model Name / Number Years produced Description. X-66 1967–1973 12-tone tonewheel generator with frequency divider and various additional features X-77 1968–1973 A restyled H-100, designed to replace the B-3. Had its own Leslie cabinet, the X-77L Two models in Church-styled cabinet were made under military specifications, and named G (G for 'Government contract', with chorus), and G-2 (with vibrato), to be installed in chapels and officer's messes of U.S.

Army and Navy. Vacuum tube musical instruments [ ] Vacuum tube musical instruments mean generating sound with -based. Hammond Organ Company commercialized it in the late-1930s as (1939–1942) and Solovox (1940–1948). Especially, new designs introduced on Novachord — and — were immediately followed by many manufacturers of and during the 1940s-1970s.

However, Hammond Organ Company did not adopt these on main products until the late-1960s, except for S series (1950–1966) and 'Solo Pedal Unit' on RT series and D-100 (1949–1969). Image Model Name / Number Years produced Description. Solovox (model J,K,L) 1940–1950 Monophonic attachment keyboard instrument, intended to accompany the pianos with lead voice of organ and orchestral sound. It consists of two units — a 3-octave mini keyboard attaching under the piano keyboard, and a tone cabinet including electronic sound generator, amplifier and loudspeaker. The sound generator is based on a vacuum tube oscillator and octave divider circuits originally designed for Novachord. There are three minor changed models: • Model J (1940–1946) • Model K (1946–1948) • Model L (1948–1950).

Solo Pedal Unit on RT series and D-100 1949–1969 Solo Pedal Unit (or Pedal Solo Unit) provides a monophonic bright bass sound on RT series and model D-100 consoles, layered with tradiotional polyphonic tonewheel pedal sound. Although Solo Pedal Unit is and it can play only one note at a time, the players can play polyphonic bass lines by the help of traditional pedal sound. The sound generator is electrically similar to Solovox Model L. It consists of a vacuum tube oscillator and five frequency divider circuits, controlled by a volume and 8-stop tablets (Bourdon 32', Bombarde 32', 16', 8', 4', 2' & 1', mute, pedal solo on) placed on the right side of lower manual. Although there are five revisions of units, these are interchangeable on all RT series consoles.

S series Chord Organ 1950–1966 First. Its ' easy to play' style initiated a new leading to today's market. The S series Chord Organ can be played via following interfaces: • 37-note keyboard for solo or chords • 96-chord buttons (12-semitones × 8-chords variation) for chords • 2 wire touch-plates for strumming effect • 2 bass pedals for root & 5th • 1 expression pedal (or knee lever) for total volume control • 3 volume knobs for volume of each part (solo, chord, bass) Transistor organs [ ] Hammond started to produce transistor organs when the production of tonewheels became too expensive, switching to full-time Integrated Circuit (IC) models in 1975. Image Model Name / Number Years produced Description.

Cougar 1973–1976 Transistor spinet organ with drawbars, in some extent, corresponded to a kind of successor of L-100 series tonewheel spinet organ, although its new drawbars arrangement is slightly exotic; its upper manual has normal nine drawbars; on the other hand, lower manual has only two 8' drawbars with sawtooth. This anomalous design was only followed by a few models (8000 series, 8100 series, and 8200 Aurora series). Dolphin 1973–1976 Spinet organ with built-in and 20 one finger chords. J-100 1967–1968 (Late 1960s ) Transistor spinet organ - no tonewheels. • Reid, Gordon (November 2003).. Sound On Sound. Retrieved 25 April 2011.

•, pp. 74-75. •,, VintageHammond.com •,, OrganHouse.com. – Two manufacturer plates can be confirmed: one is ' ' by Hammond Instrument Co., and the other is ' ' by Aeolian-Skinner organ Co. • ^ Spark, Rod (October 1997)... Retrieved 30 July 2013. •, Retrieved 5 August 2013. • Howell, Steve; Wilson, Dan..

Retrieved 26 April 2011. See also site's page. Service Manual. Hammond Organ Company. • ^, •, ad, September 27, 1958 •, •, p. 176.

•, pp. 58,63. • ^, — Serial number plates by Yamaha were printed as: ' Built by to Specifications of Hammond Organ Company, Chicago, ILL.

Made in Japan'. Also vivid color tablet buttons and ' rice paper finish' wood print panel seem to share the design language of Yamaha Electone at that time.

• ^, — Serial number plates (probably not by Yamaha) were simply printed as: ' Hammond International, Chicago, ILL. Made in Japan'. • ^, •, pp. H-20–H-22. • Welch, Jerry (2011).. Organ Service Company, Inc. Retrieved 31 July 2013.

• ^ Magnus, Nick (October 1998)... Archived from on 2016-03-03. Retrieved 2 August 2013. •,, ' Bovenmanuaal met 61 toetsen - 9 drawbars / Ondermanuaal 61 toetsen - 9 drawbars / Pedaal 25 tonig - 2 drawbars' • Jacques, David (2001).. Retrieved 2 Feb 2014. • Hugh Robjohns..

Sound On Sound (July 2003). Archived from on 2006-11-06. • Robjohns, Hugh (July 2005)... Retrieved 31 July 2013. • Hart, Terry (12 August 2011)..

Mixdown Magazine. Retrieved 2 August 2013. • Fortner, Stephen (13 December 2011).. Keyboard Magazine. Retrieved 2 August 2013.

Bibliography • Bush, Douglas Earl; Kassel, Richard (2006).. Routledge Chapman & Hall.. • Corbin, Alfred (2006)..

• Faragher, Scott (2011). The Hammond Organ: An introduction to the instrument and the players who made it famous. Hal Leonard Corporation.. Hal Leonard Corporation..

• Riley, Chris (2006).. Xulon Press.. • Vail, Mark (2002). The Hammond Organ: Beauty in the B. Backbeat Books..

• Waring, Dennis G (2002).. Wesleyan University Press.. Other sources • (in Dutch). Hammond Toonwielorgelvereniging Netherland (Hammond Oragn Club Holland). Retrieved 2013-08-06. • Service Manual.

Hammond Organ Company. Winterpark, FL: Audio Playground Synthesizer Museum. Archived from (retyped PDF) on 2010-11-24. Retrieved 2013-08-07. (recreation of original in 1970); Originally published as: Introductory Section. Service Manual. Melrose Park, Illinois: Hammond Organ Company.

• (retyped PDF). 2001 [c.1975].

Retrieved 2013-08-07. Note: It seems a retyped copy of original 'Introductory Section' of Service Manual in circa 1975, or similar. • (scanned image in PDF).

2009 [c.1984]. Retrieved 2013-08-07. Note: It seems a reprint of 'Introductory Section' of Service Manual circa 1984, or similar. Hammond Zone. Retrieved 2013-08-06.

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