
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 | |
| 38 | Uneven Notes, or Room Pattern | GIF 1 2 | ||
| 47 | Transistor Kit | GIF 1 2 | ||
| All Drawbar | 36 | Field Adjustment of Manual Actuator Pushers | GIF 1 2 | |
| Vol 2, No. 4 | Motor and Generator Lubrication | GIF 1 | ||
| A-100 | 16 | Improved Generator Filtering | GIF 1 2 | |
| B-3 | 16 | Improved Generator Filtering | GIF 1 2 | |
| C-3 | 16 | Improved Generator Filtering | GIF 1 2 | |
| D-100 | 16 | Improved Generator Filtering | GIF 1 2 | |
| E-100 | 23 | Use of Standard Tone Cabinets with E-100, 200, 300 Organs | GIF 1 | |
| 24 | Transistor and Diode Commercial Part Replacement Chart | GIF 1 | ||
| 26 | Hum Reduction / Correction to TSB #24 & Service Manual | GIF 1 | ||
| 41 | Tone Cabinet Socket Wiring Change | GIF 1 2 | ||
| 45 | Motor Mounting Brackets | GIF 1 | ||
| 46 | Switching Transient Fix | GIF 1 | ||
| 53 | Standardization of Brush & Cymbal Board | GIF 1 2 | ||
| 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 | |
| 24 | Transistor and Diode Commercial Part Replacement Chart | GIF 1 | ||
| 26 | Hum Reduction / Correction to TSB #24 & Service Manual | GIF 1 | ||
| 45 | Motor Mounting Brackets | GIF 1 | ||
| 46 | Switching Transient Fix | GIF 1 | ||
| Vol 4, No. 8 | Popping and Crackling Noise | GIF 1 | ||
| E-300 | 23 | Use of Standard Tone Cabinets with E-100, 200, 300 Organs | GIF 1 | |
| 24 | Transistor and Diode Commercial Part Replacement Chart | GIF 1 | ||
| 26 | Hum Reduction / Correction to TSB #24 & Service Manual | GIF 1 | ||
| 30 | Circuit Protection for Zener Diode, D-301 | GIF 1 | ||
| 45 | Motor Mounting Brackets | GIF 1 | ||
| 46 | Switching Transient Fix | GIF 1 | ||
| Vol 4, No. 8 | Popping and Crackling Noise | GIF 1 | ||
| H-100 | 31 | Control Settings & Adjustments | GIF 1 2 3 | |
| 33 | Transistor and Diode Commercial Part Replacement Chart | GIF 1 2 | ||
| 35 | H-100 Percussion Circuit | GIF 1 | ||
| 42 | H-100 Percussion Unit Changes | GIF 1 | ||
| 45 | Motor Mounting Brackets | GIF 1 | ||
| 46 | Improved Bass Response | GIF 1 | ||
| 51 | Key Standardization, Improved Amplifiers & Initial Oiling | GIF 1 2 | ||
| 53 | Standardization of Brush & Cymbal Board | GIF 1 2 | ||
| 55 | New Pedal Latching Power Supply & Service Man. Corrections | GIF 1 2 3 | ||
| Vol 2, No. 2 | Power Supply | GIF 1 | 
| Vol 2, No. 4 | Sporadic Crackling Noise (Below S/N 15,000) | GIF 1 | ||
| H-262 | Vol 2, No. 2 | Power Supply | GIF 1 | |
| H-300 | Vol 2, No. 10 | Correction of Cow Bell Cypher in FR2S Rhythm Unit | GIF 1 | |
| Vol 2, No. 10 | Drum Scanner | GIF 1 2 | ||
| J-400 | 22-Jul-70 | Low Rhythm Volume | GIF 1 | |
| K-100 | 28 | Regluing and/or Replacement of Neoprene Key Guide | GIF 1 | |
| 32 | Replacement of Manual Contact Switch Arm | GIF 1 | ||
| 34 | Leakage of Banjo Triggering Pulses into Pedal Circuit | GIF 1 | ||
| 44 | Key Splitting | GIF 1 | ||
| L-100 | 19 | Improved Reverberation Restraint Bracket | GIF 1 | |
|---|---|---|---|---|
| 25 | Photocell Expression Control Info | GIF 1 | ||
| 40 | Photocell Expression Control Conversion | GIF 1 2 | ||
| 45 | Motor Mounting Brackets | GIF 1 | ||
| Vol 2, No. 2 | Speakers | GIF 1 | ||
| M, M-2, M-3 | 27 | Speaker Replacement in Early Spinet and Chord Organs | GIF 1 | |
| M-100 | 18 | Vibration in Generator Cover (M-162/165) | GIF 1 | |
| 19 | Improved Reverberation Restraint Bracket | GIF 1 | ||
| 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 | |
| Vol 2, No. 4 | Changes in Parts Characteristics | GIF 1 | ||
| R-100 | --- | Wiring Error in Music Light Plug | GIF 1 | |
| S, S-1 | 27 | Speaker Replacement in Early Spinet and Chord Organs | GIF 1 | |
| S-100 | 19 | Improved Reverberation Restraint Bracket | GIF 1 | |
|---|---|---|---|---|
| 25 | Photocell Expression Control Info | GIF 1 | ||
| 40 | Photocell Expression Control Conversion | GIF 1 2 | ||
| T-100, T-200 | 57 | Service Manual Changes | GIF 1 | |
| Vol 2, No. 10 | Drum Scanner | GIF 1 2 | ||
| X-66 | Vol 1, No. 10 | X-66 Tibia Scanner Replacement | GIF 1 | |
| X-77 & GT | Vol 2, No. 2 | Power Supply | GIF 1 | |
| Vol 3, No. 2 | Hum or Buzz from Music Light | GIF 1 | ||
| Porta-B | Vol 4, No. 5 | Two items: #1: Organ Dead #2: Low Level Ciphers | GIF 1 | |
| RT-3 | 16 | Improved Generator Filtering | GIF 1 2 | |
| 2000 Series | 25 | Photocell Expression Control Info | GIF 1 | 
| 32 | Replacement of Manual Contact Switch Arm | GIF 1 | ||
| 44 | Key Splitting | GIF 1 | ||
| 3000 Series | 25 | Photocell Expression Control Info | GIF 1 | |
| 32 | Replacement of Manual Contact Switch Arm | GIF 1 | ||
| 40 | Photocell Expression Control Conversion | GIF 1 2 | ||
| 44 | Key Splitting | GIF 1 | ||
| Tone Cabs | ||||
| All | 8 | Speaker Replacement for Early Amplifiers (Type F, G & H) | GIF 1 2 | |
| All w/Oil Reverb | 49 | Replacement Reverberation Unit | GIF 1 2 3 4 5 | |
| Series 10 | 43 | Commercial Equivalent for Transistors and Diodes | GIF 1 | |