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Hammond L-112 Amp in an L-102

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  • Hammond L-112 Amp in an L-102

    Hi there, I’m sorry if this is duplicated in another thread on the site, but does anyone know if an amp from an L-112 can work in a L-102?

    The specs of both organs are the same, but when tried it, it doesn’t work in my L-102. But it does work in the L-112.

    Is there something I need to do so I can get it working?

    Thanks everyone
    Last edited by Josh Lake; 07-10-2020, 01:12 AM.

  • #2
    Yes, it will work. The last two digits in the model number refer only to the cabinet style and wood veneer used, the organs are identical. If the amp works in the L112, you've ruled out a problem in the amp. So I'd look at the power supply and distribution of required voltages etc.
    It's not what you play. It's not how you play. It's the fact that you're playing that counts.

    New website now live - www.andrew-gilbert.com

    Current instruments: Roland Atelier AT900 Platinum Edition, Yamaha PSR-S970, Kawai K1m
    Retired Organs: Lots! Kawai SR6 x 2, Hammond L122, T402, T500 x 2, X5. Conn Martinique and 652. Gulbransen 2102 Pacemaker. Kimball Temptation.
    Retired Leslies, 147, 145 x 2, 760 x 2, 710, 415 x 2.
    Retired synths: Korg 700, Roland SH1000, Jen Superstringer, Kawai S100F, Kawai S100P, Kawai K1

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    • #3
      Which amp are you referring to? There are several in an L1xx organ.
      Hammonds; BV, M101, T202, T402, R100
      Lowreys; Heritage DSA, Berkshire Deluxe TBO-1
      Farfisas; Compact Duo MK2, Professional 110R, Compact Deluxe
      Analog Korg CX3
      Leslies; 147, 145, HL822 ​

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      • #4
        All L-series guts are completely interchangeable, except for the Porta-B which is slightly different.
        Current organs: AV, BC, A-100
        Current Leslies: 22H, 142, 147, 760
        Organs in the past: L-100 (several), M-100 (x2), T-100, E-100, CV
        Other keyboards: Roland FP-4, Yamaha DX7, Yamaha TX81Z, Yamaha Motif ES Rack, Korg Krome, Novation Mininova

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        • #5
          Thanks for the responses everyone. Upon a closer look I discovered likely why the L-102 isn’t producing any sound...the tone wheel motor isn’t turning!

          it turns on and the speakers “work” but yeah the motor isn’t working. Does anyone know if it’s a simple fix, or am I potentially in for a lot of headaches at this point?

          thanks.

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          • #6
            I don't think your in for a lot of 'headaches', but you might need a little patience 8) On some of these organs, if they have been neglected the generator can become stuck simply from lack of lubrication. They can be un-stuck with a little oil, tinkering and patience. The first thing to check- can you turn the motor/generator shaft with your fingers? In a normal working generator the shaft should turn very easily. If the generator turns easily, the problem could be the motor, 'run' capacitor, or associated wiring, but first things first 8)
            Tom in Tulsa

            Fooling with: 1969 E100, 1955 M3, 1963 M100, Leslie 720

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            • #7
              The L motors use a run capacitor-probably toast and about to leak or blow nasty pcb's. Get a new one from Tonewheel General Hospital. It is the rounded silver can near the motor.
              Larry K

              Hammond BV+22H+DR-20, Celviano for piano practice
              Retired: Hammond L-102, M-3, S-6, H-112, B-2+21H+PR-40, B-3+21H, Hammond Aurora Custom, Colonnade.

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              • #8
                Ah right!

                Sorry it’s been awhile between posts! But I see the big, silver capacitor you’re talking about.

                I bet that’s exactly what it is. Do you guys know what’s involved in installing a replacement if I were to purchase one?

                But, now that my L-112 is working and the L-102 is not my wife might kill me for taking up space with two Hammonds lol!

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                • #9
                  If you can change a household light switch, you can change the capacitor. Order from Tonewheel General Hospital website. Old ones are dangerous, filled with pcb chemicals and not to be dismissed as the US reaaction to covid has been.
                  Larry K

                  Hammond BV+22H+DR-20, Celviano for piano practice
                  Retired: Hammond L-102, M-3, S-6, H-112, B-2+21H+PR-40, B-3+21H, Hammond Aurora Custom, Colonnade.

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                  • #10
                    Oh my god....I don’t know how to change a house light yet...but I feel like I should cut out that big cap and get rid of it!

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                    • #11
                      ...the USA are reckless with the Covid stuff, they are literally dying off fast down there! 😕

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                      • #12
                        Unlikely TWGH will ship anything bad from there,but it is a long journey.I would head for the local HVAC industrial supply shop with the cap in hand to read and match values.
                        There's a good chance you'll match it up.Acklands Grainger,etc.Out here I use Gregg Distributors for fan motor run caps.Long time since I played the Greywood and Misty Moon.
                        sigpic A100/251 A100/147 A102/222 B2/147 BCV/122 M3/145 M102/145
                        Various modern keyboards and modules.

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                        • #13
                          A modern fan or HVAC motor run cap with the correct capacitance and at least the same voltage capacity as the Hammond cap will do the job.
                          Be careful handling and disposing of the old cap - you don't want to come into contact with any PCB oil or burnt paper fragments.
                          Current:
                          1971 T-202 with Carsten Meyer mods: Remove key click filters, single-trigger percussion, UM 16' drawbar volume correction. Lower Manual bass foldback.
                          Korg CX3 (original 1980's analogue model).
                          1967 Leslie 122 with custom inbuilt preamp on back panel for 1/4" line-level inputs, bass & treble controls. Horn diffusers intact.
                          2009 Marshall 2061x HW Plexi head into Marshall 4x12 cabinet.

                          Former:
                          1964 C3
                          196x M-102
                          197x X5
                          197x Leslie 825

                          Comment


                          • #14
                            While you're at it, now is a good time to do a naptha flush on the tone wheel generator and refill with Hammond oil
                            Current:
                            1971 T-202 with Carsten Meyer mods: Remove key click filters, single-trigger percussion, UM 16' drawbar volume correction. Lower Manual bass foldback.
                            Korg CX3 (original 1980's analogue model).
                            1967 Leslie 122 with custom inbuilt preamp on back panel for 1/4" line-level inputs, bass & treble controls. Horn diffusers intact.
                            2009 Marshall 2061x HW Plexi head into Marshall 4x12 cabinet.

                            Former:
                            1964 C3
                            196x M-102
                            197x X5
                            197x Leslie 825

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