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Thread: Wurlitzer Organ Model 4460-4462

  1. #1
    ppp Pianississmo Jimorgonious's Avatar
    Join Date
    Mar 2012
    Santa Cruz

    Wurlitzer Organ Model 4460-4462

    Hi peeps..I just received a Wurlitzer organ Model 4460-4462 and am not familiar with the model. My question is what is the small box with a button on it do? it is between the power plugin cord and the amp? it seems like a momentary switch? also it had a fast blo fuse with a 20 on it? and the chassis says 5a slo blo...would that cause the amp to not come on? many thanks Happy New Year

  2. #2
    fff Fortississimo indianajo's Avatar
    Join Date
    Dec 2009
    Jeffersonville, Indiana

    Welcome to the forum.
    What causes amplifiers to not come on is no electricity, perhaps caused by shorted parts inside. It is amazing what lengths people will go to avoid repairing the fault in something. The 20 amp fuse in a 5 amp holder is a good indication that a previous owner was one of those "fuse repairmen". The little box with the momentary button, the device inside is probably made by klixon, TI, P&B, or Eaton. The little button probably has an amp rating printed on it, because it is a circuit breaker. apparently rather than replace the device shorting out the power supply, the previous owner inserted a circuit breaker so he could power it up again by pushing a button.
    Most common device to cause shorts in an organ with hard wired speakers is the electrolytic capacitors in the power supply, which dry up and start shorting at about 20 years. These are tall aluminum cans with circles, squares and triangles on them for the various sections, or small aluminum cans with a plastic or cardboard wrapper with a plus on one end or a minus in balls pointing at one lead. Repeated over and over repowering of a shorted amp can damage the power transformer, but if you are lucky the previous ***** only blew out a $1 rectifier or power resistor or something. Wurlitzers of the early 60's are noted for having $.09 capacitors sprinkled throughout which are prone to short out and cause various functions to stop working or overload the main power supply. I bought about 50 e-caps to start on my 4500, and intend to replace all of them before I stop. I put 71 in my Hammond, that should do the job for another 25-35 years.
    I don't have a 4460 schematic diagram to give more specific advice. If you are going to try to repair it yourself, read before diving in. You'll need a dvm to prove parts are safe to touch, I prefer the non-autoranging sears 82140. If you decide to replace some parts, you'll need a soldering iron like a weller WP35, a screwdriver (not pointed) tip for it, tin-lead rosin core small diameter solder, needle nose and slip joint pliers, klein or miller wire strippers (26-16 ga) a steel pick (sears) a sharp diagonal cutters (fishing department), a 5 way screw/nutdriver. If the organ has vacuum tubes see for a tutorial on replacing the e-caps. If it is transistorized, see
    If you want a little general training on debugging transistor power supplies, pick up a copy of Electronic Devices, the Electron Flow Version by Thomas Floyd or a similar community college text.
    Good luck. Some Wurlitzer organs are worth the effort to repair them and upgrade all the capacitors for another 40 years. Some are not. I don't have an opinion on this model, I don't know what it is. My 4500 and 4300 seem well worth the effort.
    city Hammond H-182 organ (2 ea),A100,10-82 TC, Wurlitzer 4500, Schober Recital Organ, Steinway 40" console , Sohmer 39" pianos, Ensoniq EPS, ; country Hammond H112

  3. #3
    ff Fortissimo james's Avatar
    Join Date
    May 2004

    The Wurlitzer 4460-4462 models are console models with all tubes. The box between the plug in and amp could be a surge protector.
    Baldwin Church Organ Model 48C
    Baldwin Spinet 58R
    Lowrey Spinet SCL
    Wurlitzer 4100A
    Crown Pump Organ by Geo. P. Bent, Chicago, Illinois

    Organs I hope to obtain in the future:

    Conn Tube Minuet or Caprice even a transistor Caprice with the color coded tabs
    Gulbransen H3 or G3, or V.
    Wurlitzer 44, 4410, 4420, ES Reed Models, 4300, 4500, Transistor Models

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