
The following Technical Service Bulletins (TSB) are sorted by model # where applicable. If you do not see your particular model here, please look under the "All" area.
| Model | TSB # | TSB Description | ||
| All | 37 | Scanner-Run Motor Assemblies | 
      GIF 1  | 
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| 38 | Uneven Notes, or Room Pattern | 
      GIF 1 2  | 
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| 47 | Transistor Kit | 
      GIF 1 2  | 
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| All Drawbar | 36 | Field Adjustment of Manual Actuator Pushers | 
      GIF 1 2  | 
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| Vol 2, No. 4 | Motor and Generator Lubrication | 
      GIF 1  | 
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| A-100 | 16 | Improved Generator Filtering | 
      GIF 1 2  | 
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| B-3 | 16 | Improved Generator Filtering | 
      GIF 1 2  | 
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| C-3 | 16 | Improved Generator Filtering | 
      GIF 1 2  | 
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| D-100 | 16 | Improved Generator Filtering | 
      GIF 1 2  | 
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| E-100 | 23 | Use of Standard Tone Cabinets with E-100, 200, 300 Organs | 
      GIF 1  | 
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| 24 | Transistor and Diode Commercial Part Replacement Chart | 
      GIF 1  | 
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| 26 | Hum Reduction / Correction to TSB #24 & Service Manual | 
      GIF 1  | 
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| 41 | Tone Cabinet Socket Wiring Change | 
      GIF 1 2  | 
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| 45 | Motor Mounting Brackets | 
      GIF 1  | 
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| 46 | Switching Transient Fix | 
      GIF 1  | 
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| 53 | Standardization of Brush & Cymbal Board | 
      GIF 1 2  | 
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| Vol 4, No. 8 | Popping and Crackling Noise | 
      GIF 1  | 
      
| E-200 | 23 | Use of Standard Tone Cabinets with E-100, 200, 300 Organs | 
      GIF 1  | 
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| 24 | Transistor and Diode Commercial Part Replacement Chart | 
      GIF 1  | 
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| 26 | Hum Reduction / Correction to TSB #24 & Service Manual | 
      GIF 1  | 
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| 45 | Motor Mounting Brackets | 
      GIF 1  | 
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| 46 | Switching Transient Fix | 
      GIF 1  | 
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| Vol 4, No. 8 | Popping and Crackling Noise | 
      GIF 1  | 
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| E-300 | 23 | Use of Standard Tone Cabinets with E-100, 200, 300 Organs | 
      GIF 1  | 
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| 24 | Transistor and Diode Commercial Part Replacement Chart | 
      GIF 1  | 
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| 26 | Hum Reduction / Correction to TSB #24 & Service Manual | 
      GIF 1  | 
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| 30 | Circuit Protection for Zener Diode, D-301 | 
      GIF 1  | 
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| 45 | Motor Mounting Brackets | 
      GIF 1  | 
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| 46 | Switching Transient Fix | 
      GIF 1  | 
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| Vol 4, No. 8 | Popping and Crackling Noise | 
      GIF 1  | 
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| H-100 | 31 | Control Settings & Adjustments | 
      GIF 1 2 3  | 
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| 33 | Transistor and Diode Commercial Part Replacement Chart | 
      GIF 1 2  | 
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| 35 | H-100 Percussion Circuit | 
      GIF 1  | 
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| 42 | H-100 Percussion Unit Changes | 
      GIF 1  | 
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| 45 | Motor Mounting Brackets | 
      GIF 1  | 
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| 46 | Improved Bass Response | 
      GIF 1  | 
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| 51 | Key Standardization, Improved Amplifiers & Initial Oiling | 
      GIF 1 2  | 
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| 53 | Standardization of Brush & Cymbal Board | 
      GIF 1 2  | 
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| 55 | New Pedal Latching Power Supply & Service Man. Corrections | 
      GIF 1 2 3  | 
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| Vol 2, No. 2 | Power Supply | 
      GIF 1  | 
      
| Vol 2, No. 4 | Sporadic Crackling Noise (Below S/N 15,000) | 
      GIF 1  | 
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| H-262 | Vol 2, No. 2 | Power Supply | 
      GIF 1  | 
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| H-300 | Vol 2, No. 10 | Correction of Cow Bell Cypher in FR2S Rhythm Unit | 
      GIF 1  | 
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| Vol 2, No. 10 | Drum Scanner | 
      GIF 1 2  | 
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| J-400 | 22-Jul-70 | Low Rhythm Volume | 
      GIF 1  | 
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| K-100 | 28 | Regluing and/or Replacement of Neoprene Key Guide | 
      GIF 1  | 
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| 32 | Replacement of Manual Contact Switch Arm | 
      GIF 1  | 
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| 34 | Leakage of Banjo Triggering Pulses into Pedal Circuit | 
      GIF 1  | 
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| 44 | Key Splitting | 
      GIF 1  | 
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| L-100 | 19 | Improved Reverberation Restraint Bracket | 
      GIF 1  | 
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|---|---|---|---|---|
| 25 | Photocell Expression Control Info | 
      GIF 1  | 
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| 40 | Photocell Expression Control Conversion | 
      GIF 1 2  | 
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| 45 | Motor Mounting Brackets | 
      GIF 1  | 
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| Vol 2, No. 2 | Speakers | 
      GIF 1  | 
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| M, M-2, M-3 | 27 | Speaker Replacement in Early Spinet and Chord Organs | 
      GIF 1  | 
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| M-100 | 18 | Vibration in Generator Cover (M-162/165) | 
      GIF 1  | 
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| 19 | Improved Reverberation Restraint Bracket | 
      GIF 1  | 
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| Vol 4, No. 5 | Static Noise When Playing First Two or Three Pedals | 
      GIF 1  | 
      
| N-Series | 17-Mar-70 | Philco & G.E. IC's | 
      GIF 1  | 
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| Vol 2, No. 4 | Changes in Parts Characteristics | 
      GIF 1  | 
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| R-100 | --- | Wiring Error in Music Light Plug | 
      GIF 1  | 
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| S, S-1 | 27 | Speaker Replacement in Early Spinet and Chord Organs | 
      GIF 1  | 
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| S-100 | 19 | Improved Reverberation Restraint Bracket | 
      GIF 1  | 
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|---|---|---|---|---|
| 25 | Photocell Expression Control Info | 
      GIF 1  | 
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| 40 | Photocell Expression Control Conversion | 
      GIF 1 2  | 
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| T-100, T-200 | 57 | Service Manual Changes | 
      GIF 1  | 
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| Vol 2, No. 10 | Drum Scanner | 
      GIF 1 2  | 
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| X-66 | Vol 1, No. 10 | X-66 Tibia Scanner Replacement | 
      GIF 1  | 
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| X-77 & GT | Vol 2, No. 2 | Power Supply | 
      GIF 1  | 
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| Vol 3, No. 2 | Hum or Buzz from Music Light | 
      GIF 1  | 
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| Porta-B | Vol 4, No. 5 | Two items: #1: Organ Dead #2: Low Level Ciphers | 
      GIF 1  | 
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| RT-3 | 16 | Improved Generator Filtering | 
      GIF 1 2  | 
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| 2000 Series | 25 | Photocell Expression Control Info | 
      GIF 1  | 
      
| 32 | Replacement of Manual Contact Switch Arm | 
      GIF 1  | 
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| 44 | Key Splitting | 
      GIF 1  | 
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| 3000 Series | 25 | Photocell Expression Control Info | 
      GIF 1  | 
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| 32 | Replacement of Manual Contact Switch Arm | 
      GIF 1  | 
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| 40 | Photocell Expression Control Conversion | 
      GIF 1 2  | 
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| 44 | Key Splitting | 
      GIF 1  | 
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| Tone Cabs | ||||
| All | 8 | Speaker Replacement for Early Amplifiers (Type F, G & H) | 
      GIF 1 2  | 
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| 
      All 
       w/Oil Reverb  | 
      49 | Replacement Reverberation Unit | 
      GIF 1 2 3 4 5  | 
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| Series 10 | 43 | Commercial Equivalent for Transistors and Diodes | 
      GIF 1  | 
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