Trek II is a registered trademark of Trek II Products, Inc.
Service Updates
 Hammond C3 Organ
Hammond Tone Wheel Organs Leslie Tone Cabinets Roland Digital Pianos
B3/C3/A100/D152/RT3 With intermittent Static, Hum, Volume Fluctuations, or Distortion Early Tone Cabinets Lacking Slow Speed Hammer Breakage (Service Bulletin 102331)
Pre B3 Organs With intermittent Static, Hum, Volume Fluctuations, or Distortion Excessively Noisy Keys
Hammond Tone Wheel Bearings (Squealing, Noisy, Seized Up)
Hammond A100 Reverb Failure
Pre B3 Hammond Models with Ratchet Style Drawbars Suzuki Digital Pianos Yamaha Digital Pianos
Choppy Vibrato on Tone Wheel Organs Sagging Slugish Keys Sagging Slugish Keys
Excessively Noisy Keys


Hammond B3/C3/A100/D152/RT3 With intermittent Static, Hum, Volume Fluctuations, or Distortion
  • Symptoms: Intermittent Static, Hum, Volume Fluctuation, Distortion, Poor Bass or Treble Response From Organ
  • Cause: B3s and these related models were made from 1955 to 1975 and the components within the preamp are old and aging. As components within the preamp age,they drift in value and sometimes deteriorate causing intermittent statics, hums, poor bass or treble response, distortion, volume fluctuations, etc.
  • Solution: Replace the Organ Preamp With Rebuilt Preamp (all resistors, capacitors, potentiometers and tubes replaced)
  • Affected Models: B3, C3, A100, RT3
  • Procedure: Replacement of aging tube preamp with a rebuilt tube preamp, all resistors, capacitors, potentiometers and tubes have been replaced, also an improved power supply for a cleaner sound has been added, and the chassis is treated to prevent the growth of zinc dendrites. The warmth of a tube preamp is retained and the original (now disconnected) capacitors are left in place for asthetics. Price includes installation at your location and a one year warranty.
  • Cost: Parts and Labor $995*. Sales tax is additional.
    		•  B3 Tube Preamp B3 Tube Preamp


    Hammond Pre-B3 models With intermittent Static, Hum, Volume Fluctuations, or Distortion
  • Symptoms: Intermittent Static, Hum, Volume Fluctuation, Distortion, Poor Bass or Treble Response From Organ
  • Cause: These early model Hammonds were made from 1935 to 1955 and the components within the preamp are old and aging. As components within the preamp age,they drift in value and sometimes deteriorate causing intermittent statics, hums, poor bass or treble response, distortion, volume fluctuations, etc.
  • Solution: Replace the Organ Preamp With SSP-3 Solid State Preamp
  • Affected Models: A, AB, B, BC, BV, B2, C, C2, CV, RT2, etc.
  • Procedure: Replacement of aging tube preamp with Trek II Solid State Preamp carefully designed to faithfully reproduce the response of the original tube pre-amp when it was new. Price includes installation at your location and a one year warranty.
  • Cost: Parts and Labor $995*. Sales tax is additional.
    		•  SSP-3 Solid State Preamp


    Hammond Tone Wheel Bearings (Squealing, Noisy, Seized Up)
  • Symptoms: Noisy, squealing bearings or organ won't start because bearings have seized up.
  • Cause: Organ has not been oiled for many years or oil is not reaching some bearings.
  • Solution: By the time bearings start to squeal or seize, regular oiling procedures are inadequate. The bearings must be oiled directly.
  • Affected Models: All Hammond Tone Wheel Models (Model #s starting with letters A,B,C,D,E,G,H,L,M,R,T,X)
  • Procedure: Access bottom of tone wheel generator and oil each bearing directly, then apply Hammond oil generously through oiling funnels.
  • Cost: Usually our minimum charge plus the cost of oil covers this repair. Occasionaly more is needed.
    		•  Hammond Tone Wheel


    Hammond A100 Reverb Failure
  • Symptoms: Reverb No Longer Works or is Staticy
  • Cause: Either the Reverb Spring Delay or the Reverb Amp or Both Have Failed
  • Solution: Some Parts for the A100 Reverb System Are No Longer Available or Difficult to Find. The Cost of Repairing the Reverb is About the Same As Installing a New Trek II Reverk Kit, So the Best Solution is the Much Better Sounding Reverb of Trek II.
  • Procedure: Remove or Disconnect Old Reverb Spring Delay and Amp. Install Trek II Reverb. All Work Done at Your Location.
  • Cost: Parts and Labor $485*. Sales Tax is Additional.
    		•  Hammond A100 Trek II Reverb Kit


    Pre B3 Hammond Models with Ratchet Style Drawbars
  • Comment: Even Though Not a Malfunction, This Annoying Condition Can Be Addressed.
  • Symptoms: The Ratchet Style Drawbars Are Difficult to Position, and Have Tone Dropouts in Between Drawbar Settings.
  • Cause: That's the Way They Made Them Back Then.
  • Solution: Install Smooth Drawbars Conversion. This Kit Replaces the Old Style Ratchety Drawbars With a New Drawbar Assembly Specifically Designed to Address This Deficiency. No More Ratcheting and No More Tone Drop-Outs between Drawbar Settings. Your Drawbars Will Operate As Smoothly or Even Smoother Than Those on Later Model B3s,C3s,and A100s.
  • Procedure: Remove Old Drawbar Assembly and Install New Smooth Drawbar Assembly.
  • Cost: Parts and Labor $1100.00*. Sales Tax is Additional.
    		•  Smooth Drawbars Assembly


    Choppy Vibrato on Tone Wheel Organs
  • Symptoms: Choppy Sounding Vibrato on A, B, C, D, E, G, R and T series Organs
  • Cause: The Vibrato Scanner is plated with zinc which has a tendancy to grow crystalline whiskers called dentrites. The dendrites short the scanner's terminals to ground.
  • Solution: Replace the Scanner with a rebuilt scanner.
  • Procedure: Our rebuilt Scanners have been completely disassmbled, cleaned and lubricated, removing all dendrites. We then seal the scanner chassis to retard the growth of dendrites.
  • Cost: $285*
    		•  Vibrato Scanner


    Early Leslie Tone Cabinets With Fast and Off Speed (No Slow Speed)
  • Comment: Even Though Not a Malfunction, This Annoying Condition Can Be Addressed.
  • Symptoms: Older Leslies Provided Fast Speed Tremolo and Off (No Slow Speed)
  • Cause: That's the Way They Made Them Back Then.
  • Solution: Install Leslie Two Speed Motor Controller. This Device Will Run the Existing Motors in Both Fast And Slow Modes.
  • Procedure: Install Two Speed Motor Controller. Lubricate Motors.
  • Requirements: Existing Motors Must Be In Fair to Good Enough Condition.
  • Cost: Parts and Labor $495.00*. Sales Tax is Additional.
    		•  Inside a Leslie Tone Cabinet


    Roland Digital Piano - Hammer Breakage (Service Bulletin 102331)
  • Symptoms: Keys sag, won't play, make noise, etc.
  • Cause: Weighted Hammers Beneath Keys Break - The plastic stem holding the lead weight cracks and breaks after prolonged use.
  • Solution: Replace All Hammers With Newly Designed Hammers of Greatly Increased Durability
  • Affected Models: A-90, A-90EX, FP-1, FP-8, FP-9, HP-145, HP-147, HP-236, HP-237, HP-237E, HP-245, HP-2800, HP-2800G, HP-2880, HP-330, HP-330E, HP-335, HP-3800, HP-3800G, HP-530, HP-530E, HP-535, HP-550G, HP-555G, HP-5700, HP-730, HP-7700, KR-1070, KR-370, KR-375, KR-4300, KR-570, KR-570W, KR-575, KR-575P, KR-770, RD-500, RD-600, XV-88
  • Cost: Roland Provides Hammer Set at Greatly Discounted Price. With Parts, Sales Tax & Labor Cost Is About $585.00*
    		•  Roland Digital Piano


    Roland Digital Piano - Broken Sub-chassis, Compressed Felts
  • Symptoms: Excessively Noisy Keys
  • Cause: On models using the PA-5 keyboard assembly, as felts compress, the hammers travel too far breaking various sub-chassis and other related parts
  • Solution: Replace felts and broken sub-chassis parts. Complete disassembly of keyboard is necessary. While we're in there we lubricate all pivot points too.
  • Affected Models: DP-1000D, DP-900, F-100, F-100-BK, F-90, F-90-BK, FANTOM-S88, FANTOM-X8, FP-3, FP-5, HP103D-LC, HP103D-MH, HP103-MH, HP103-PE, HP107D-LC, HP107D-MH, HP107-LC, HP107-MH, HP-147R, HP-147RD, HP-147RE, HP-237LE, HP-237PE, HP-237R, HP-237RD, HP-237RE, HP-237RPE, HP-2D-MH, HP-2-MH, HP-2-PE, HP-337, HP-337D, HP-337E, HP-337R, HP-337RD, HP-557R, HP-557RD, HP-557RS, HP-7D-MH, HP-7-MH, HP-7SD-LC, HP-7SD-MH, HPI-5, HPI-5A, HPI-5AD, HPI-5D, HPI-5D-LC, HPI-5-LC, HPI-7D-LC, HPI-7D-MH, HPI-7-MH, KF-7, KF-90, KR-1077, KR-1077M, KR-1077M-I, KR-15M-PE, KR-15M-PM, KR-15-PE, KR-15-PM, KR-17M-PE, KR-277, KR-277D, KR-377, KR-377D, KR-577, KR-577D, KR-577P, KR-577PD, KR-577S, KR-5D-MH, KR-5D-MP, KR-5-MH, KR-5-PE, KR-7D-MH, KR-7IRD-MH, KR-7-MH, KR-7-PM, KR-977, KR-977-MH, MP-300, MP-500-BW, PT-2700, PT-3100, RD-700, RD-700SX
  • Cost: $395*
    		•  Roland Digital Piano


    Suzuki Digital Piano - Sagging Keys, Sluggish Keys, Sticking Keys
  • Symptoms: Keys sag or are sticking or sluggish, etc.
  • Cause: The weighted hammers in the keyboard action hang up on the pivot rod that runs internally through the length of the keyboard.
  • Solution: Suzuki now supplies a kit that replaces the pivot rod with one that has a slightly reduced diameter. When installed, this kit completely and permanently cures the problem.
  • Affected Models: DG502P, FP-S, GP-3, GP-7, HG425e, HP97, HP275e, SS100 and ST-7.
  • Requirements: None
  • Procedure: This modification takes about 1 ½ hours to do and can be done in your home. The modification frees up the movement of the keys and hammers, giving the keyboard a slightly faster action. The noise level of the keys is slightly increased.
  • Cost: $395.00* for most models, $545* for pianos with Auto Player
    		•  Suzuki HG425e Digital Piano


    Yamaha Digital Piano - Sluggish, Sticking or Sagging Keys
  • Symptoms: Keys sag or are sticking or sluggish, etc.
  • Cause: The Keys break at the rear pivot point of the key, typically lean a little to the left, then won't move up and down freely.
  • Solution: On qualifying pianos, Yamaha will supply a new keyboard assembly, one that has all reinforced keys. There is no charge for the assembly, but the owner pays for installation.
  • Affected Models: Many CLP, CVP, P, and YDP series models. Let us know the exact model # and we will check with Yamaha.
  • Requirements: Approval from Yamaha
  • Procedure: We contact Yamaha with model and serial number for approval. Upon approval Yamaha sends us the replacement keyboard assembly. The installation is done in your home.
  • Cost: Yamaha supplies the keyboard assembly free of charge. The installation cost of $165* is owner's responsibility.
    		•  Yamaha Digital Piano


    Yamaha Digital Piano - Exessively Noisy Keys
  • Symptoms: When keys are played they are clunky and noisy
  • Cause: Over time the Key felts compress and degrade allowing the hammers to noisily hit the keyboard chassis.
  • Solution: Replace Key felt pads restoring sound level and operation of keys to new condition
  • Affected Models: Many CLP, CVP, P, and YDP series models.
  • Cost: $230*
    		•  Yamaha Digital Piano
    *This price may be higher in some areas depending on location and is subject to change without notice.
    Hammond Organs | Leslie Tone Cabinets | Roland Digital Pianos
    Suzuki Digital Pianos | Yamaha Digital Pianos