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Reducing noise on a JCM2000 with the ROS-2000 PCB

Amp repair Kits

Hot rod deluxe Repair Kit

More Valves/Tubes

Recent Repairs

Line 6 Helix repair 06/07/2026
Marshall JCM 2000 Replacement PCB – TSL100 and DSL100 bias drift repair using the ROS-2000 board 17/06/2026
Vintage Big Muff Pi repair (Triangle PCB era) 22/10/2025
Marshall DSL40CR weak reverb modification 15/10/2025
Marshall DSL40CR 15/10/2025
WEM Copicat Tape Echo Repair 25/11/2024
Hughes & Kettner Switchblade Amp Repair 21/11/2024
AER Compact repair 18/11/2024
Line 6 Helix Ground Loop issue when using the amp channel switcher 08/10/2024
Seymour Duncan Powerstage 170 Repair 17/05/2024
Valve Amp Workshop Spec Suggestions 01/11/2023
Roland RH-1 RH1 power supply for Roland JV2080 repair 11/10/2022
Midi For Guitarists 17/06/2022
Keld Ampworks’ Fluffy Green Policy 09/03/2022
Behringer XR18 repair (digital mixer repair) 08/06/2021
Philips MyLiving Fremont LED light repair 07/02/2021
Fault finding in audio equipment 08/09/2020
Lead Free Solder in guitar amps and the audio industry. 08/07/2020
Mains voltage in the UK and the EU – and what it means for guitar amps. 08/07/2020
Covid-19 (Coronavirus) Update: Customer safety and and changes to service. (Updated 03/09/21) 12/05/2020

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Keld Ampworks Guitar Amp Repair

Recent Repair Topics

AC30 Repair (4) amp hum (3) amp repair (13) bass amp repair (9) blackstar repair (6) blowing fuses (3) blues junior repair (3) botched repair fixed (4) carbon copy repair (5) crackling noise (4) Delay pedal repair (4) dj equipment repair (5) Dual Rectifier repair (3) faulty input jack (3) faulty power valve (3) faulty spring reverb (3) Fender Repair (9) fixing a botch job (3) guitar amp repair (17) Laney repair (5) Line 6 repair (3) Marshall Repair (9) Mesa Boogie Repair (4) modelling amp repair (3) MXR repair (6) no sound (3) PA repair (3) Pedal Repair (8) repair (42) Service (5) Solid State Amp Repair (13) speaker repair (3) Trace Elliot Repair (3) Valve amp Bias (11) valve amp blowing fuses (7) valve amp repair (36) valve amp service (4) vintage ac30 repair (3) vintage amp repair (6) vintage amp safety (3) vintage vox repair (3) volume drops out (6) Vox Repair (4) wrong power supply (3) Yamaha repair (3)

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